diff --git a/backend/ent/migrate/schema.go b/backend/ent/migrate/schema.go
index 6c56f2d0..bdbb9fdd 100644
--- a/backend/ent/migrate/schema.go
+++ b/backend/ent/migrate/schema.go
@@ -744,6 +744,10 @@ var (
 		{Name: "model", Type: field.TypeString, Size: 100},
 		{Name: "requested_model", Type: field.TypeString, Nullable: true, Size: 100},
 		{Name: "upstream_model", Type: field.TypeString, Nullable: true, Size: 100},
+		{Name: "channel_id", Type: field.TypeInt64, Nullable: true},
+		{Name: "model_mapping_chain", Type: field.TypeString, Nullable: true, Size: 500},
+		{Name: "billing_tier", Type: field.TypeString, Nullable: true, Size: 50},
+		{Name: "billing_mode", Type: field.TypeString, Nullable: true, Size: 20},
 		{Name: "input_tokens", Type: field.TypeInt, Default: 0},
 		{Name: "output_tokens", Type: field.TypeInt, Default: 0},
 		{Name: "cache_creation_tokens", Type: field.TypeInt, Default: 0},
@@ -783,31 +787,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[30]},
+				Columns:    []*schema.Column{UsageLogsColumns[34]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[31]},
+				Columns:    []*schema.Column{UsageLogsColumns[35]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[32]},
+				Columns:    []*schema.Column{UsageLogsColumns[36]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[33]},
+				Columns:    []*schema.Column{UsageLogsColumns[37]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[34]},
+				Columns:    []*schema.Column{UsageLogsColumns[38]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -816,32 +820,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[33]},
+				Columns: []*schema.Column{UsageLogsColumns[37]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[30]},
+				Columns: []*schema.Column{UsageLogsColumns[34]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[31]},
+				Columns: []*schema.Column{UsageLogsColumns[35]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[32]},
+				Columns: []*schema.Column{UsageLogsColumns[36]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[34]},
+				Columns: []*schema.Column{UsageLogsColumns[38]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[29]},
+				Columns: []*schema.Column{UsageLogsColumns[33]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -861,17 +865,17 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[33], UsageLogsColumns[29]},
+				Columns: []*schema.Column{UsageLogsColumns[37], UsageLogsColumns[33]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[30], UsageLogsColumns[29]},
+				Columns: []*schema.Column{UsageLogsColumns[34], UsageLogsColumns[33]},
 			},
 			{
 				Name:    "usagelog_group_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[32], UsageLogsColumns[29]},
+				Columns: []*schema.Column{UsageLogsColumns[36], UsageLogsColumns[33]},
 			},
 		},
 	}
diff --git a/backend/ent/mutation.go b/backend/ent/mutation.go
index a862209d..28d9a0ef 100644
--- a/backend/ent/mutation.go
+++ b/backend/ent/mutation.go
@@ -19725,6 +19725,11 @@ type UsageLogMutation struct {
 	model                       *string
 	requested_model             *string
 	upstream_model              *string
+	channel_id                  *int64
+	addchannel_id               *int64
+	model_mapping_chain         *string
+	billing_tier                *string
+	billing_mode                *string
 	input_tokens                *int
 	addinput_tokens             *int
 	output_tokens               *int
@@ -20160,6 +20165,223 @@ func (m *UsageLogMutation) ResetUpstreamModel() {
 	delete(m.clearedFields, usagelog.FieldUpstreamModel)
 }
 
+// SetChannelID sets the "channel_id" field.
+func (m *UsageLogMutation) SetChannelID(i int64) {
+	m.channel_id = &i
+	m.addchannel_id = nil
+}
+
+// ChannelID returns the value of the "channel_id" field in the mutation.
+func (m *UsageLogMutation) ChannelID() (r int64, exists bool) {
+	v := m.channel_id
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldChannelID returns the old "channel_id" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldChannelID(ctx context.Context) (v *int64, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldChannelID is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldChannelID requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldChannelID: %w", err)
+	}
+	return oldValue.ChannelID, nil
+}
+
+// AddChannelID adds i to the "channel_id" field.
+func (m *UsageLogMutation) AddChannelID(i int64) {
+	if m.addchannel_id != nil {
+		*m.addchannel_id += i
+	} else {
+		m.addchannel_id = &i
+	}
+}
+
+// AddedChannelID returns the value that was added to the "channel_id" field in this mutation.
+func (m *UsageLogMutation) AddedChannelID() (r int64, exists bool) {
+	v := m.addchannel_id
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (m *UsageLogMutation) ClearChannelID() {
+	m.channel_id = nil
+	m.addchannel_id = nil
+	m.clearedFields[usagelog.FieldChannelID] = struct{}{}
+}
+
+// ChannelIDCleared returns if the "channel_id" field was cleared in this mutation.
+func (m *UsageLogMutation) ChannelIDCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldChannelID]
+	return ok
+}
+
+// ResetChannelID resets all changes to the "channel_id" field.
+func (m *UsageLogMutation) ResetChannelID() {
+	m.channel_id = nil
+	m.addchannel_id = nil
+	delete(m.clearedFields, usagelog.FieldChannelID)
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (m *UsageLogMutation) SetModelMappingChain(s string) {
+	m.model_mapping_chain = &s
+}
+
+// ModelMappingChain returns the value of the "model_mapping_chain" field in the mutation.
+func (m *UsageLogMutation) ModelMappingChain() (r string, exists bool) {
+	v := m.model_mapping_chain
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldModelMappingChain returns the old "model_mapping_chain" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldModelMappingChain(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldModelMappingChain is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldModelMappingChain requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldModelMappingChain: %w", err)
+	}
+	return oldValue.ModelMappingChain, nil
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (m *UsageLogMutation) ClearModelMappingChain() {
+	m.model_mapping_chain = nil
+	m.clearedFields[usagelog.FieldModelMappingChain] = struct{}{}
+}
+
+// ModelMappingChainCleared returns if the "model_mapping_chain" field was cleared in this mutation.
+func (m *UsageLogMutation) ModelMappingChainCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldModelMappingChain]
+	return ok
+}
+
+// ResetModelMappingChain resets all changes to the "model_mapping_chain" field.
+func (m *UsageLogMutation) ResetModelMappingChain() {
+	m.model_mapping_chain = nil
+	delete(m.clearedFields, usagelog.FieldModelMappingChain)
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (m *UsageLogMutation) SetBillingTier(s string) {
+	m.billing_tier = &s
+}
+
+// BillingTier returns the value of the "billing_tier" field in the mutation.
+func (m *UsageLogMutation) BillingTier() (r string, exists bool) {
+	v := m.billing_tier
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldBillingTier returns the old "billing_tier" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldBillingTier(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldBillingTier is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldBillingTier requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldBillingTier: %w", err)
+	}
+	return oldValue.BillingTier, nil
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (m *UsageLogMutation) ClearBillingTier() {
+	m.billing_tier = nil
+	m.clearedFields[usagelog.FieldBillingTier] = struct{}{}
+}
+
+// BillingTierCleared returns if the "billing_tier" field was cleared in this mutation.
+func (m *UsageLogMutation) BillingTierCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldBillingTier]
+	return ok
+}
+
+// ResetBillingTier resets all changes to the "billing_tier" field.
+func (m *UsageLogMutation) ResetBillingTier() {
+	m.billing_tier = nil
+	delete(m.clearedFields, usagelog.FieldBillingTier)
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (m *UsageLogMutation) SetBillingMode(s string) {
+	m.billing_mode = &s
+}
+
+// BillingMode returns the value of the "billing_mode" field in the mutation.
+func (m *UsageLogMutation) BillingMode() (r string, exists bool) {
+	v := m.billing_mode
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldBillingMode returns the old "billing_mode" field's value of the UsageLog entity.
+// If the UsageLog object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *UsageLogMutation) OldBillingMode(ctx context.Context) (v *string, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldBillingMode is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldBillingMode requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldBillingMode: %w", err)
+	}
+	return oldValue.BillingMode, nil
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (m *UsageLogMutation) ClearBillingMode() {
+	m.billing_mode = nil
+	m.clearedFields[usagelog.FieldBillingMode] = struct{}{}
+}
+
+// BillingModeCleared returns if the "billing_mode" field was cleared in this mutation.
+func (m *UsageLogMutation) BillingModeCleared() bool {
+	_, ok := m.clearedFields[usagelog.FieldBillingMode]
+	return ok
+}
+
+// ResetBillingMode resets all changes to the "billing_mode" field.
+func (m *UsageLogMutation) ResetBillingMode() {
+	m.billing_mode = nil
+	delete(m.clearedFields, usagelog.FieldBillingMode)
+}
+
 // SetGroupID sets the "group_id" field.
 func (m *UsageLogMutation) SetGroupID(i int64) {
 	m.group = &i
@@ -21781,7 +22003,7 @@ func (m *UsageLogMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *UsageLogMutation) Fields() []string {
-	fields := make([]string, 0, 34)
+	fields := make([]string, 0, 38)
 	if m.user != nil {
 		fields = append(fields, usagelog.FieldUserID)
 	}
@@ -21803,6 +22025,18 @@ func (m *UsageLogMutation) Fields() []string {
 	if m.upstream_model != nil {
 		fields = append(fields, usagelog.FieldUpstreamModel)
 	}
+	if m.channel_id != nil {
+		fields = append(fields, usagelog.FieldChannelID)
+	}
+	if m.model_mapping_chain != nil {
+		fields = append(fields, usagelog.FieldModelMappingChain)
+	}
+	if m.billing_tier != nil {
+		fields = append(fields, usagelog.FieldBillingTier)
+	}
+	if m.billing_mode != nil {
+		fields = append(fields, usagelog.FieldBillingMode)
+	}
 	if m.group != nil {
 		fields = append(fields, usagelog.FieldGroupID)
 	}
@@ -21906,6 +22140,14 @@ func (m *UsageLogMutation) Field(name string) (ent.Value, bool) {
 		return m.RequestedModel()
 	case usagelog.FieldUpstreamModel:
 		return m.UpstreamModel()
+	case usagelog.FieldChannelID:
+		return m.ChannelID()
+	case usagelog.FieldModelMappingChain:
+		return m.ModelMappingChain()
+	case usagelog.FieldBillingTier:
+		return m.BillingTier()
+	case usagelog.FieldBillingMode:
+		return m.BillingMode()
 	case usagelog.FieldGroupID:
 		return m.GroupID()
 	case usagelog.FieldSubscriptionID:
@@ -21983,6 +22225,14 @@ func (m *UsageLogMutation) OldField(ctx context.Context, name string) (ent.Value
 		return m.OldRequestedModel(ctx)
 	case usagelog.FieldUpstreamModel:
 		return m.OldUpstreamModel(ctx)
+	case usagelog.FieldChannelID:
+		return m.OldChannelID(ctx)
+	case usagelog.FieldModelMappingChain:
+		return m.OldModelMappingChain(ctx)
+	case usagelog.FieldBillingTier:
+		return m.OldBillingTier(ctx)
+	case usagelog.FieldBillingMode:
+		return m.OldBillingMode(ctx)
 	case usagelog.FieldGroupID:
 		return m.OldGroupID(ctx)
 	case usagelog.FieldSubscriptionID:
@@ -22095,6 +22345,34 @@ func (m *UsageLogMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetUpstreamModel(v)
 		return nil
+	case usagelog.FieldChannelID:
+		v, ok := value.(int64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetChannelID(v)
+		return nil
+	case usagelog.FieldModelMappingChain:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetModelMappingChain(v)
+		return nil
+	case usagelog.FieldBillingTier:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetBillingTier(v)
+		return nil
+	case usagelog.FieldBillingMode:
+		v, ok := value.(string)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetBillingMode(v)
+		return nil
 	case usagelog.FieldGroupID:
 		v, ok := value.(int64)
 		if !ok {
@@ -22292,6 +22570,9 @@ func (m *UsageLogMutation) SetField(name string, value ent.Value) error {
 // this mutation.
 func (m *UsageLogMutation) AddedFields() []string {
 	var fields []string
+	if m.addchannel_id != nil {
+		fields = append(fields, usagelog.FieldChannelID)
+	}
 	if m.addinput_tokens != nil {
 		fields = append(fields, usagelog.FieldInputTokens)
 	}
@@ -22354,6 +22635,8 @@ func (m *UsageLogMutation) AddedFields() []string {
 // was not set, or was not defined in the schema.
 func (m *UsageLogMutation) AddedField(name string) (ent.Value, bool) {
 	switch name {
+	case usagelog.FieldChannelID:
+		return m.AddedChannelID()
 	case usagelog.FieldInputTokens:
 		return m.AddedInputTokens()
 	case usagelog.FieldOutputTokens:
@@ -22399,6 +22682,13 @@ func (m *UsageLogMutation) AddedField(name string) (ent.Value, bool) {
 // type.
 func (m *UsageLogMutation) AddField(name string, value ent.Value) error {
 	switch name {
+	case usagelog.FieldChannelID:
+		v, ok := value.(int64)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.AddChannelID(v)
+		return nil
 	case usagelog.FieldInputTokens:
 		v, ok := value.(int)
 		if !ok {
@@ -22539,6 +22829,18 @@ func (m *UsageLogMutation) ClearedFields() []string {
 	if m.FieldCleared(usagelog.FieldUpstreamModel) {
 		fields = append(fields, usagelog.FieldUpstreamModel)
 	}
+	if m.FieldCleared(usagelog.FieldChannelID) {
+		fields = append(fields, usagelog.FieldChannelID)
+	}
+	if m.FieldCleared(usagelog.FieldModelMappingChain) {
+		fields = append(fields, usagelog.FieldModelMappingChain)
+	}
+	if m.FieldCleared(usagelog.FieldBillingTier) {
+		fields = append(fields, usagelog.FieldBillingTier)
+	}
+	if m.FieldCleared(usagelog.FieldBillingMode) {
+		fields = append(fields, usagelog.FieldBillingMode)
+	}
 	if m.FieldCleared(usagelog.FieldGroupID) {
 		fields = append(fields, usagelog.FieldGroupID)
 	}
@@ -22586,6 +22888,18 @@ func (m *UsageLogMutation) ClearField(name string) error {
 	case usagelog.FieldUpstreamModel:
 		m.ClearUpstreamModel()
 		return nil
+	case usagelog.FieldChannelID:
+		m.ClearChannelID()
+		return nil
+	case usagelog.FieldModelMappingChain:
+		m.ClearModelMappingChain()
+		return nil
+	case usagelog.FieldBillingTier:
+		m.ClearBillingTier()
+		return nil
+	case usagelog.FieldBillingMode:
+		m.ClearBillingMode()
+		return nil
 	case usagelog.FieldGroupID:
 		m.ClearGroupID()
 		return nil
@@ -22642,6 +22956,18 @@ func (m *UsageLogMutation) ResetField(name string) error {
 	case usagelog.FieldUpstreamModel:
 		m.ResetUpstreamModel()
 		return nil
+	case usagelog.FieldChannelID:
+		m.ResetChannelID()
+		return nil
+	case usagelog.FieldModelMappingChain:
+		m.ResetModelMappingChain()
+		return nil
+	case usagelog.FieldBillingTier:
+		m.ResetBillingTier()
+		return nil
+	case usagelog.FieldBillingMode:
+		m.ResetBillingMode()
+		return nil
 	case usagelog.FieldGroupID:
 		m.ResetGroupID()
 		return nil
diff --git a/backend/ent/runtime/runtime.go b/backend/ent/runtime/runtime.go
index fd6be291..336b1f82 100644
--- a/backend/ent/runtime/runtime.go
+++ b/backend/ent/runtime/runtime.go
@@ -875,92 +875,104 @@ func init() {
 	usagelogDescUpstreamModel := usagelogFields[6].Descriptor()
 	// usagelog.UpstreamModelValidator is a validator for the "upstream_model" field. It is called by the builders before save.
 	usagelog.UpstreamModelValidator = usagelogDescUpstreamModel.Validators[0].(func(string) error)
+	// usagelogDescModelMappingChain is the schema descriptor for model_mapping_chain field.
+	usagelogDescModelMappingChain := usagelogFields[8].Descriptor()
+	// usagelog.ModelMappingChainValidator is a validator for the "model_mapping_chain" field. It is called by the builders before save.
+	usagelog.ModelMappingChainValidator = usagelogDescModelMappingChain.Validators[0].(func(string) error)
+	// usagelogDescBillingTier is the schema descriptor for billing_tier field.
+	usagelogDescBillingTier := usagelogFields[9].Descriptor()
+	// usagelog.BillingTierValidator is a validator for the "billing_tier" field. It is called by the builders before save.
+	usagelog.BillingTierValidator = usagelogDescBillingTier.Validators[0].(func(string) error)
+	// usagelogDescBillingMode is the schema descriptor for billing_mode field.
+	usagelogDescBillingMode := usagelogFields[10].Descriptor()
+	// usagelog.BillingModeValidator is a validator for the "billing_mode" field. It is called by the builders before save.
+	usagelog.BillingModeValidator = usagelogDescBillingMode.Validators[0].(func(string) error)
 	// usagelogDescInputTokens is the schema descriptor for input_tokens field.
-	usagelogDescInputTokens := usagelogFields[9].Descriptor()
+	usagelogDescInputTokens := usagelogFields[13].Descriptor()
 	// usagelog.DefaultInputTokens holds the default value on creation for the input_tokens field.
 	usagelog.DefaultInputTokens = usagelogDescInputTokens.Default.(int)
 	// usagelogDescOutputTokens is the schema descriptor for output_tokens field.
-	usagelogDescOutputTokens := usagelogFields[10].Descriptor()
+	usagelogDescOutputTokens := usagelogFields[14].Descriptor()
 	// usagelog.DefaultOutputTokens holds the default value on creation for the output_tokens field.
 	usagelog.DefaultOutputTokens = usagelogDescOutputTokens.Default.(int)
 	// usagelogDescCacheCreationTokens is the schema descriptor for cache_creation_tokens field.
-	usagelogDescCacheCreationTokens := usagelogFields[11].Descriptor()
+	usagelogDescCacheCreationTokens := usagelogFields[15].Descriptor()
 	// usagelog.DefaultCacheCreationTokens holds the default value on creation for the cache_creation_tokens field.
 	usagelog.DefaultCacheCreationTokens = usagelogDescCacheCreationTokens.Default.(int)
 	// usagelogDescCacheReadTokens is the schema descriptor for cache_read_tokens field.
-	usagelogDescCacheReadTokens := usagelogFields[12].Descriptor()
+	usagelogDescCacheReadTokens := usagelogFields[16].Descriptor()
 	// usagelog.DefaultCacheReadTokens holds the default value on creation for the cache_read_tokens field.
 	usagelog.DefaultCacheReadTokens = usagelogDescCacheReadTokens.Default.(int)
 	// usagelogDescCacheCreation5mTokens is the schema descriptor for cache_creation_5m_tokens field.
-	usagelogDescCacheCreation5mTokens := usagelogFields[13].Descriptor()
+	usagelogDescCacheCreation5mTokens := usagelogFields[17].Descriptor()
 	// usagelog.DefaultCacheCreation5mTokens holds the default value on creation for the cache_creation_5m_tokens field.
 	usagelog.DefaultCacheCreation5mTokens = usagelogDescCacheCreation5mTokens.Default.(int)
 	// usagelogDescCacheCreation1hTokens is the schema descriptor for cache_creation_1h_tokens field.
-	usagelogDescCacheCreation1hTokens := usagelogFields[14].Descriptor()
+	usagelogDescCacheCreation1hTokens := usagelogFields[18].Descriptor()
 	// usagelog.DefaultCacheCreation1hTokens holds the default value on creation for the cache_creation_1h_tokens field.
 	usagelog.DefaultCacheCreation1hTokens = usagelogDescCacheCreation1hTokens.Default.(int)
 	// usagelogDescInputCost is the schema descriptor for input_cost field.
-	usagelogDescInputCost := usagelogFields[15].Descriptor()
+	usagelogDescInputCost := usagelogFields[19].Descriptor()
 	// usagelog.DefaultInputCost holds the default value on creation for the input_cost field.
 	usagelog.DefaultInputCost = usagelogDescInputCost.Default.(float64)
 	// usagelogDescOutputCost is the schema descriptor for output_cost field.
-	usagelogDescOutputCost := usagelogFields[16].Descriptor()
+	usagelogDescOutputCost := usagelogFields[20].Descriptor()
 	// usagelog.DefaultOutputCost holds the default value on creation for the output_cost field.
 	usagelog.DefaultOutputCost = usagelogDescOutputCost.Default.(float64)
 	// usagelogDescCacheCreationCost is the schema descriptor for cache_creation_cost field.
-	usagelogDescCacheCreationCost := usagelogFields[17].Descriptor()
+	usagelogDescCacheCreationCost := usagelogFields[21].Descriptor()
 	// usagelog.DefaultCacheCreationCost holds the default value on creation for the cache_creation_cost field.
 	usagelog.DefaultCacheCreationCost = usagelogDescCacheCreationCost.Default.(float64)
 	// usagelogDescCacheReadCost is the schema descriptor for cache_read_cost field.
-	usagelogDescCacheReadCost := usagelogFields[18].Descriptor()
+	usagelogDescCacheReadCost := usagelogFields[22].Descriptor()
 	// usagelog.DefaultCacheReadCost holds the default value on creation for the cache_read_cost field.
 	usagelog.DefaultCacheReadCost = usagelogDescCacheReadCost.Default.(float64)
 	// usagelogDescTotalCost is the schema descriptor for total_cost field.
-	usagelogDescTotalCost := usagelogFields[19].Descriptor()
+	usagelogDescTotalCost := usagelogFields[23].Descriptor()
 	// usagelog.DefaultTotalCost holds the default value on creation for the total_cost field.
 	usagelog.DefaultTotalCost = usagelogDescTotalCost.Default.(float64)
 	// usagelogDescActualCost is the schema descriptor for actual_cost field.
-	usagelogDescActualCost := usagelogFields[20].Descriptor()
+	usagelogDescActualCost := usagelogFields[24].Descriptor()
 	// usagelog.DefaultActualCost holds the default value on creation for the actual_cost field.
 	usagelog.DefaultActualCost = usagelogDescActualCost.Default.(float64)
 	// usagelogDescRateMultiplier is the schema descriptor for rate_multiplier field.
-	usagelogDescRateMultiplier := usagelogFields[21].Descriptor()
+	usagelogDescRateMultiplier := usagelogFields[25].Descriptor()
 	// usagelog.DefaultRateMultiplier holds the default value on creation for the rate_multiplier field.
 	usagelog.DefaultRateMultiplier = usagelogDescRateMultiplier.Default.(float64)
 	// usagelogDescBillingType is the schema descriptor for billing_type field.
-	usagelogDescBillingType := usagelogFields[23].Descriptor()
+	usagelogDescBillingType := usagelogFields[27].Descriptor()
 	// usagelog.DefaultBillingType holds the default value on creation for the billing_type field.
 	usagelog.DefaultBillingType = usagelogDescBillingType.Default.(int8)
 	// usagelogDescStream is the schema descriptor for stream field.
-	usagelogDescStream := usagelogFields[24].Descriptor()
+	usagelogDescStream := usagelogFields[28].Descriptor()
 	// usagelog.DefaultStream holds the default value on creation for the stream field.
 	usagelog.DefaultStream = usagelogDescStream.Default.(bool)
 	// usagelogDescUserAgent is the schema descriptor for user_agent field.
-	usagelogDescUserAgent := usagelogFields[27].Descriptor()
+	usagelogDescUserAgent := usagelogFields[31].Descriptor()
 	// usagelog.UserAgentValidator is a validator for the "user_agent" field. It is called by the builders before save.
 	usagelog.UserAgentValidator = usagelogDescUserAgent.Validators[0].(func(string) error)
 	// usagelogDescIPAddress is the schema descriptor for ip_address field.
-	usagelogDescIPAddress := usagelogFields[28].Descriptor()
+	usagelogDescIPAddress := usagelogFields[32].Descriptor()
 	// usagelog.IPAddressValidator is a validator for the "ip_address" field. It is called by the builders before save.
 	usagelog.IPAddressValidator = usagelogDescIPAddress.Validators[0].(func(string) error)
 	// usagelogDescImageCount is the schema descriptor for image_count field.
-	usagelogDescImageCount := usagelogFields[29].Descriptor()
+	usagelogDescImageCount := usagelogFields[33].Descriptor()
 	// usagelog.DefaultImageCount holds the default value on creation for the image_count field.
 	usagelog.DefaultImageCount = usagelogDescImageCount.Default.(int)
 	// usagelogDescImageSize is the schema descriptor for image_size field.
-	usagelogDescImageSize := usagelogFields[30].Descriptor()
+	usagelogDescImageSize := usagelogFields[34].Descriptor()
 	// usagelog.ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
 	usagelog.ImageSizeValidator = usagelogDescImageSize.Validators[0].(func(string) error)
 	// usagelogDescMediaType is the schema descriptor for media_type field.
-	usagelogDescMediaType := usagelogFields[31].Descriptor()
+	usagelogDescMediaType := usagelogFields[35].Descriptor()
 	// usagelog.MediaTypeValidator is a validator for the "media_type" field. It is called by the builders before save.
 	usagelog.MediaTypeValidator = usagelogDescMediaType.Validators[0].(func(string) error)
 	// usagelogDescCacheTTLOverridden is the schema descriptor for cache_ttl_overridden field.
-	usagelogDescCacheTTLOverridden := usagelogFields[32].Descriptor()
+	usagelogDescCacheTTLOverridden := usagelogFields[36].Descriptor()
 	// usagelog.DefaultCacheTTLOverridden holds the default value on creation for the cache_ttl_overridden field.
 	usagelog.DefaultCacheTTLOverridden = usagelogDescCacheTTLOverridden.Default.(bool)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[33].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[37].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()
diff --git a/backend/ent/schema/usage_log.go b/backend/ent/schema/usage_log.go
index 32c39e25..f6c725a2 100644
--- a/backend/ent/schema/usage_log.go
+++ b/backend/ent/schema/usage_log.go
@@ -53,6 +53,10 @@ func (UsageLog) Fields() []ent.Field {
 			MaxLen(100).
 			Optional().
 			Nillable(),
+		field.Int64("channel_id").Optional().Nillable().Comment("渠道 ID"),
+		field.String("model_mapping_chain").MaxLen(500).Optional().Nillable().Comment("模型映射链"),
+		field.String("billing_tier").MaxLen(50).Optional().Nillable().Comment("计费层级标签"),
+		field.String("billing_mode").MaxLen(20).Optional().Nillable().Comment("计费模式：token/per_request/image"),
 		field.Int64("group_id").
 			Optional().
 			Nillable(),
diff --git a/backend/ent/usagelog.go b/backend/ent/usagelog.go
index fb4ee1c5..b857afdb 100644
--- a/backend/ent/usagelog.go
+++ b/backend/ent/usagelog.go
@@ -36,6 +36,14 @@ type UsageLog struct {
 	RequestedModel *string `json:"requested_model,omitempty"`
 	// UpstreamModel holds the value of the "upstream_model" field.
 	UpstreamModel *string `json:"upstream_model,omitempty"`
+	// 渠道 ID
+	ChannelID *int64 `json:"channel_id,omitempty"`
+	// 模型映射链
+	ModelMappingChain *string `json:"model_mapping_chain,omitempty"`
+	// 计费层级标签
+	BillingTier *string `json:"billing_tier,omitempty"`
+	// 计费模式：token/per_request/image
+	BillingMode *string `json:"billing_mode,omitempty"`
 	// GroupID holds the value of the "group_id" field.
 	GroupID *int64 `json:"group_id,omitempty"`
 	// SubscriptionID holds the value of the "subscription_id" field.
@@ -177,9 +185,9 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 			values[i] = new(sql.NullBool)
 		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier, usagelog.FieldAccountRateMultiplier:
 			values[i] = new(sql.NullFloat64)
-		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
+		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldChannelID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
 			values[i] = new(sql.NullInt64)
-		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize, usagelog.FieldMediaType:
+		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldRequestedModel, usagelog.FieldUpstreamModel, usagelog.FieldModelMappingChain, usagelog.FieldBillingTier, usagelog.FieldBillingMode, usagelog.FieldUserAgent, usagelog.FieldIPAddress, usagelog.FieldImageSize, usagelog.FieldMediaType:
 			values[i] = new(sql.NullString)
 		case usagelog.FieldCreatedAt:
 			values[i] = new(sql.NullTime)
@@ -248,6 +256,34 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 				_m.UpstreamModel = new(string)
 				*_m.UpstreamModel = value.String
 			}
+		case usagelog.FieldChannelID:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field channel_id", values[i])
+			} else if value.Valid {
+				_m.ChannelID = new(int64)
+				*_m.ChannelID = value.Int64
+			}
+		case usagelog.FieldModelMappingChain:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field model_mapping_chain", values[i])
+			} else if value.Valid {
+				_m.ModelMappingChain = new(string)
+				*_m.ModelMappingChain = value.String
+			}
+		case usagelog.FieldBillingTier:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field billing_tier", values[i])
+			} else if value.Valid {
+				_m.BillingTier = new(string)
+				*_m.BillingTier = value.String
+			}
+		case usagelog.FieldBillingMode:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field billing_mode", values[i])
+			} else if value.Valid {
+				_m.BillingMode = new(string)
+				*_m.BillingMode = value.String
+			}
 		case usagelog.FieldGroupID:
 			if value, ok := values[i].(*sql.NullInt64); !ok {
 				return fmt.Errorf("unexpected type %T for field group_id", values[i])
@@ -505,6 +541,26 @@ func (_m *UsageLog) String() string {
 		builder.WriteString(*v)
 	}
 	builder.WriteString(", ")
+	if v := _m.ChannelID; v != nil {
+		builder.WriteString("channel_id=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
+	if v := _m.ModelMappingChain; v != nil {
+		builder.WriteString("model_mapping_chain=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.BillingTier; v != nil {
+		builder.WriteString("billing_tier=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
+	if v := _m.BillingMode; v != nil {
+		builder.WriteString("billing_mode=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
 	if v := _m.GroupID; v != nil {
 		builder.WriteString("group_id=")
 		builder.WriteString(fmt.Sprintf("%v", *v))
diff --git a/backend/ent/usagelog/usagelog.go b/backend/ent/usagelog/usagelog.go
index b534f193..1567ad9b 100644
--- a/backend/ent/usagelog/usagelog.go
+++ b/backend/ent/usagelog/usagelog.go
@@ -28,6 +28,14 @@ const (
 	FieldRequestedModel = "requested_model"
 	// FieldUpstreamModel holds the string denoting the upstream_model field in the database.
 	FieldUpstreamModel = "upstream_model"
+	// FieldChannelID holds the string denoting the channel_id field in the database.
+	FieldChannelID = "channel_id"
+	// FieldModelMappingChain holds the string denoting the model_mapping_chain field in the database.
+	FieldModelMappingChain = "model_mapping_chain"
+	// FieldBillingTier holds the string denoting the billing_tier field in the database.
+	FieldBillingTier = "billing_tier"
+	// FieldBillingMode holds the string denoting the billing_mode field in the database.
+	FieldBillingMode = "billing_mode"
 	// FieldGroupID holds the string denoting the group_id field in the database.
 	FieldGroupID = "group_id"
 	// FieldSubscriptionID holds the string denoting the subscription_id field in the database.
@@ -141,6 +149,10 @@ var Columns = []string{
 	FieldModel,
 	FieldRequestedModel,
 	FieldUpstreamModel,
+	FieldChannelID,
+	FieldModelMappingChain,
+	FieldBillingTier,
+	FieldBillingMode,
 	FieldGroupID,
 	FieldSubscriptionID,
 	FieldInputTokens,
@@ -189,6 +201,12 @@ var (
 	RequestedModelValidator func(string) error
 	// UpstreamModelValidator is a validator for the "upstream_model" field. It is called by the builders before save.
 	UpstreamModelValidator func(string) error
+	// ModelMappingChainValidator is a validator for the "model_mapping_chain" field. It is called by the builders before save.
+	ModelMappingChainValidator func(string) error
+	// BillingTierValidator is a validator for the "billing_tier" field. It is called by the builders before save.
+	BillingTierValidator func(string) error
+	// BillingModeValidator is a validator for the "billing_mode" field. It is called by the builders before save.
+	BillingModeValidator func(string) error
 	// DefaultInputTokens holds the default value on creation for the "input_tokens" field.
 	DefaultInputTokens int
 	// DefaultOutputTokens holds the default value on creation for the "output_tokens" field.
@@ -278,6 +296,26 @@ func ByUpstreamModel(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldUpstreamModel, opts...).ToFunc()
 }
 
+// ByChannelID orders the results by the channel_id field.
+func ByChannelID(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldChannelID, opts...).ToFunc()
+}
+
+// ByModelMappingChain orders the results by the model_mapping_chain field.
+func ByModelMappingChain(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldModelMappingChain, opts...).ToFunc()
+}
+
+// ByBillingTier orders the results by the billing_tier field.
+func ByBillingTier(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldBillingTier, opts...).ToFunc()
+}
+
+// ByBillingMode orders the results by the billing_mode field.
+func ByBillingMode(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldBillingMode, opts...).ToFunc()
+}
+
 // ByGroupID orders the results by the group_id field.
 func ByGroupID(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldGroupID, opts...).ToFunc()
diff --git a/backend/ent/usagelog/where.go b/backend/ent/usagelog/where.go
index f95bceb7..a1fb36cb 100644
--- a/backend/ent/usagelog/where.go
+++ b/backend/ent/usagelog/where.go
@@ -90,6 +90,26 @@ func UpstreamModel(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldUpstreamModel, v))
 }
 
+// ChannelID applies equality check predicate on the "channel_id" field. It's identical to ChannelIDEQ.
+func ChannelID(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldChannelID, v))
+}
+
+// ModelMappingChain applies equality check predicate on the "model_mapping_chain" field. It's identical to ModelMappingChainEQ.
+func ModelMappingChain(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldModelMappingChain, v))
+}
+
+// BillingTier applies equality check predicate on the "billing_tier" field. It's identical to BillingTierEQ.
+func BillingTier(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldBillingTier, v))
+}
+
+// BillingMode applies equality check predicate on the "billing_mode" field. It's identical to BillingModeEQ.
+func BillingMode(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldBillingMode, v))
+}
+
 // GroupID applies equality check predicate on the "group_id" field. It's identical to GroupIDEQ.
 func GroupID(v int64) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldGroupID, v))
@@ -565,6 +585,281 @@ func UpstreamModelContainsFold(v string) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldContainsFold(FieldUpstreamModel, v))
 }
 
+// ChannelIDEQ applies the EQ predicate on the "channel_id" field.
+func ChannelIDEQ(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldChannelID, v))
+}
+
+// ChannelIDNEQ applies the NEQ predicate on the "channel_id" field.
+func ChannelIDNEQ(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldChannelID, v))
+}
+
+// ChannelIDIn applies the In predicate on the "channel_id" field.
+func ChannelIDIn(vs ...int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldChannelID, vs...))
+}
+
+// ChannelIDNotIn applies the NotIn predicate on the "channel_id" field.
+func ChannelIDNotIn(vs ...int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldChannelID, vs...))
+}
+
+// ChannelIDGT applies the GT predicate on the "channel_id" field.
+func ChannelIDGT(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldChannelID, v))
+}
+
+// ChannelIDGTE applies the GTE predicate on the "channel_id" field.
+func ChannelIDGTE(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldChannelID, v))
+}
+
+// ChannelIDLT applies the LT predicate on the "channel_id" field.
+func ChannelIDLT(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldChannelID, v))
+}
+
+// ChannelIDLTE applies the LTE predicate on the "channel_id" field.
+func ChannelIDLTE(v int64) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldChannelID, v))
+}
+
+// ChannelIDIsNil applies the IsNil predicate on the "channel_id" field.
+func ChannelIDIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldChannelID))
+}
+
+// ChannelIDNotNil applies the NotNil predicate on the "channel_id" field.
+func ChannelIDNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldChannelID))
+}
+
+// ModelMappingChainEQ applies the EQ predicate on the "model_mapping_chain" field.
+func ModelMappingChainEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainNEQ applies the NEQ predicate on the "model_mapping_chain" field.
+func ModelMappingChainNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainIn applies the In predicate on the "model_mapping_chain" field.
+func ModelMappingChainIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldModelMappingChain, vs...))
+}
+
+// ModelMappingChainNotIn applies the NotIn predicate on the "model_mapping_chain" field.
+func ModelMappingChainNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldModelMappingChain, vs...))
+}
+
+// ModelMappingChainGT applies the GT predicate on the "model_mapping_chain" field.
+func ModelMappingChainGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainGTE applies the GTE predicate on the "model_mapping_chain" field.
+func ModelMappingChainGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainLT applies the LT predicate on the "model_mapping_chain" field.
+func ModelMappingChainLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainLTE applies the LTE predicate on the "model_mapping_chain" field.
+func ModelMappingChainLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainContains applies the Contains predicate on the "model_mapping_chain" field.
+func ModelMappingChainContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainHasPrefix applies the HasPrefix predicate on the "model_mapping_chain" field.
+func ModelMappingChainHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainHasSuffix applies the HasSuffix predicate on the "model_mapping_chain" field.
+func ModelMappingChainHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainIsNil applies the IsNil predicate on the "model_mapping_chain" field.
+func ModelMappingChainIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldModelMappingChain))
+}
+
+// ModelMappingChainNotNil applies the NotNil predicate on the "model_mapping_chain" field.
+func ModelMappingChainNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldModelMappingChain))
+}
+
+// ModelMappingChainEqualFold applies the EqualFold predicate on the "model_mapping_chain" field.
+func ModelMappingChainEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldModelMappingChain, v))
+}
+
+// ModelMappingChainContainsFold applies the ContainsFold predicate on the "model_mapping_chain" field.
+func ModelMappingChainContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldModelMappingChain, v))
+}
+
+// BillingTierEQ applies the EQ predicate on the "billing_tier" field.
+func BillingTierEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldBillingTier, v))
+}
+
+// BillingTierNEQ applies the NEQ predicate on the "billing_tier" field.
+func BillingTierNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldBillingTier, v))
+}
+
+// BillingTierIn applies the In predicate on the "billing_tier" field.
+func BillingTierIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldBillingTier, vs...))
+}
+
+// BillingTierNotIn applies the NotIn predicate on the "billing_tier" field.
+func BillingTierNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldBillingTier, vs...))
+}
+
+// BillingTierGT applies the GT predicate on the "billing_tier" field.
+func BillingTierGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldBillingTier, v))
+}
+
+// BillingTierGTE applies the GTE predicate on the "billing_tier" field.
+func BillingTierGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldBillingTier, v))
+}
+
+// BillingTierLT applies the LT predicate on the "billing_tier" field.
+func BillingTierLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldBillingTier, v))
+}
+
+// BillingTierLTE applies the LTE predicate on the "billing_tier" field.
+func BillingTierLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldBillingTier, v))
+}
+
+// BillingTierContains applies the Contains predicate on the "billing_tier" field.
+func BillingTierContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldBillingTier, v))
+}
+
+// BillingTierHasPrefix applies the HasPrefix predicate on the "billing_tier" field.
+func BillingTierHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldBillingTier, v))
+}
+
+// BillingTierHasSuffix applies the HasSuffix predicate on the "billing_tier" field.
+func BillingTierHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldBillingTier, v))
+}
+
+// BillingTierIsNil applies the IsNil predicate on the "billing_tier" field.
+func BillingTierIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldBillingTier))
+}
+
+// BillingTierNotNil applies the NotNil predicate on the "billing_tier" field.
+func BillingTierNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldBillingTier))
+}
+
+// BillingTierEqualFold applies the EqualFold predicate on the "billing_tier" field.
+func BillingTierEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldBillingTier, v))
+}
+
+// BillingTierContainsFold applies the ContainsFold predicate on the "billing_tier" field.
+func BillingTierContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldBillingTier, v))
+}
+
+// BillingModeEQ applies the EQ predicate on the "billing_mode" field.
+func BillingModeEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldBillingMode, v))
+}
+
+// BillingModeNEQ applies the NEQ predicate on the "billing_mode" field.
+func BillingModeNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldBillingMode, v))
+}
+
+// BillingModeIn applies the In predicate on the "billing_mode" field.
+func BillingModeIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldBillingMode, vs...))
+}
+
+// BillingModeNotIn applies the NotIn predicate on the "billing_mode" field.
+func BillingModeNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldBillingMode, vs...))
+}
+
+// BillingModeGT applies the GT predicate on the "billing_mode" field.
+func BillingModeGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldBillingMode, v))
+}
+
+// BillingModeGTE applies the GTE predicate on the "billing_mode" field.
+func BillingModeGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldBillingMode, v))
+}
+
+// BillingModeLT applies the LT predicate on the "billing_mode" field.
+func BillingModeLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldBillingMode, v))
+}
+
+// BillingModeLTE applies the LTE predicate on the "billing_mode" field.
+func BillingModeLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldBillingMode, v))
+}
+
+// BillingModeContains applies the Contains predicate on the "billing_mode" field.
+func BillingModeContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldBillingMode, v))
+}
+
+// BillingModeHasPrefix applies the HasPrefix predicate on the "billing_mode" field.
+func BillingModeHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldBillingMode, v))
+}
+
+// BillingModeHasSuffix applies the HasSuffix predicate on the "billing_mode" field.
+func BillingModeHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldBillingMode, v))
+}
+
+// BillingModeIsNil applies the IsNil predicate on the "billing_mode" field.
+func BillingModeIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldBillingMode))
+}
+
+// BillingModeNotNil applies the NotNil predicate on the "billing_mode" field.
+func BillingModeNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldBillingMode))
+}
+
+// BillingModeEqualFold applies the EqualFold predicate on the "billing_mode" field.
+func BillingModeEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldBillingMode, v))
+}
+
+// BillingModeContainsFold applies the ContainsFold predicate on the "billing_mode" field.
+func BillingModeContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldBillingMode, v))
+}
+
 // GroupIDEQ applies the EQ predicate on the "group_id" field.
 func GroupIDEQ(v int64) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldGroupID, v))
diff --git a/backend/ent/usagelog_create.go b/backend/ent/usagelog_create.go
index 6ae0bf59..d15e231d 100644
--- a/backend/ent/usagelog_create.go
+++ b/backend/ent/usagelog_create.go
@@ -85,6 +85,62 @@ func (_c *UsageLogCreate) SetNillableUpstreamModel(v *string) *UsageLogCreate {
 	return _c
 }
 
+// SetChannelID sets the "channel_id" field.
+func (_c *UsageLogCreate) SetChannelID(v int64) *UsageLogCreate {
+	_c.mutation.SetChannelID(v)
+	return _c
+}
+
+// SetNillableChannelID sets the "channel_id" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableChannelID(v *int64) *UsageLogCreate {
+	if v != nil {
+		_c.SetChannelID(*v)
+	}
+	return _c
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (_c *UsageLogCreate) SetModelMappingChain(v string) *UsageLogCreate {
+	_c.mutation.SetModelMappingChain(v)
+	return _c
+}
+
+// SetNillableModelMappingChain sets the "model_mapping_chain" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableModelMappingChain(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetModelMappingChain(*v)
+	}
+	return _c
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (_c *UsageLogCreate) SetBillingTier(v string) *UsageLogCreate {
+	_c.mutation.SetBillingTier(v)
+	return _c
+}
+
+// SetNillableBillingTier sets the "billing_tier" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableBillingTier(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetBillingTier(*v)
+	}
+	return _c
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (_c *UsageLogCreate) SetBillingMode(v string) *UsageLogCreate {
+	_c.mutation.SetBillingMode(v)
+	return _c
+}
+
+// SetNillableBillingMode sets the "billing_mode" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableBillingMode(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetBillingMode(*v)
+	}
+	return _c
+}
+
 // SetGroupID sets the "group_id" field.
 func (_c *UsageLogCreate) SetGroupID(v int64) *UsageLogCreate {
 	_c.mutation.SetGroupID(v)
@@ -634,6 +690,21 @@ func (_c *UsageLogCreate) check() error {
 			return &ValidationError{Name: "upstream_model", err: fmt.Errorf(`ent: validator failed for field "UsageLog.upstream_model": %w`, err)}
 		}
 	}
+	if v, ok := _c.mutation.ModelMappingChain(); ok {
+		if err := usagelog.ModelMappingChainValidator(v); err != nil {
+			return &ValidationError{Name: "model_mapping_chain", err: fmt.Errorf(`ent: validator failed for field "UsageLog.model_mapping_chain": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.BillingTier(); ok {
+		if err := usagelog.BillingTierValidator(v); err != nil {
+			return &ValidationError{Name: "billing_tier", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_tier": %w`, err)}
+		}
+	}
+	if v, ok := _c.mutation.BillingMode(); ok {
+		if err := usagelog.BillingModeValidator(v); err != nil {
+			return &ValidationError{Name: "billing_mode", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_mode": %w`, err)}
+		}
+	}
 	if _, ok := _c.mutation.InputTokens(); !ok {
 		return &ValidationError{Name: "input_tokens", err: errors.New(`ent: missing required field "UsageLog.input_tokens"`)}
 	}
@@ -760,6 +831,22 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldUpstreamModel, field.TypeString, value)
 		_node.UpstreamModel = &value
 	}
+	if value, ok := _c.mutation.ChannelID(); ok {
+		_spec.SetField(usagelog.FieldChannelID, field.TypeInt64, value)
+		_node.ChannelID = &value
+	}
+	if value, ok := _c.mutation.ModelMappingChain(); ok {
+		_spec.SetField(usagelog.FieldModelMappingChain, field.TypeString, value)
+		_node.ModelMappingChain = &value
+	}
+	if value, ok := _c.mutation.BillingTier(); ok {
+		_spec.SetField(usagelog.FieldBillingTier, field.TypeString, value)
+		_node.BillingTier = &value
+	}
+	if value, ok := _c.mutation.BillingMode(); ok {
+		_spec.SetField(usagelog.FieldBillingMode, field.TypeString, value)
+		_node.BillingMode = &value
+	}
 	if value, ok := _c.mutation.InputTokens(); ok {
 		_spec.SetField(usagelog.FieldInputTokens, field.TypeInt, value)
 		_node.InputTokens = value
@@ -1093,6 +1180,84 @@ func (u *UsageLogUpsert) ClearUpstreamModel() *UsageLogUpsert {
 	return u
 }
 
+// SetChannelID sets the "channel_id" field.
+func (u *UsageLogUpsert) SetChannelID(v int64) *UsageLogUpsert {
+	u.Set(usagelog.FieldChannelID, v)
+	return u
+}
+
+// UpdateChannelID sets the "channel_id" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateChannelID() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldChannelID)
+	return u
+}
+
+// AddChannelID adds v to the "channel_id" field.
+func (u *UsageLogUpsert) AddChannelID(v int64) *UsageLogUpsert {
+	u.Add(usagelog.FieldChannelID, v)
+	return u
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (u *UsageLogUpsert) ClearChannelID() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldChannelID)
+	return u
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (u *UsageLogUpsert) SetModelMappingChain(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldModelMappingChain, v)
+	return u
+}
+
+// UpdateModelMappingChain sets the "model_mapping_chain" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateModelMappingChain() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldModelMappingChain)
+	return u
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (u *UsageLogUpsert) ClearModelMappingChain() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldModelMappingChain)
+	return u
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (u *UsageLogUpsert) SetBillingTier(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldBillingTier, v)
+	return u
+}
+
+// UpdateBillingTier sets the "billing_tier" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateBillingTier() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldBillingTier)
+	return u
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (u *UsageLogUpsert) ClearBillingTier() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldBillingTier)
+	return u
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (u *UsageLogUpsert) SetBillingMode(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldBillingMode, v)
+	return u
+}
+
+// UpdateBillingMode sets the "billing_mode" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateBillingMode() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldBillingMode)
+	return u
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (u *UsageLogUpsert) ClearBillingMode() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldBillingMode)
+	return u
+}
+
 // SetGroupID sets the "group_id" field.
 func (u *UsageLogUpsert) SetGroupID(v int64) *UsageLogUpsert {
 	u.Set(usagelog.FieldGroupID, v)
@@ -1724,6 +1889,97 @@ func (u *UsageLogUpsertOne) ClearUpstreamModel() *UsageLogUpsertOne {
 	})
 }
 
+// SetChannelID sets the "channel_id" field.
+func (u *UsageLogUpsertOne) SetChannelID(v int64) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetChannelID(v)
+	})
+}
+
+// AddChannelID adds v to the "channel_id" field.
+func (u *UsageLogUpsertOne) AddChannelID(v int64) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddChannelID(v)
+	})
+}
+
+// UpdateChannelID sets the "channel_id" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateChannelID() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateChannelID()
+	})
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (u *UsageLogUpsertOne) ClearChannelID() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearChannelID()
+	})
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (u *UsageLogUpsertOne) SetModelMappingChain(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetModelMappingChain(v)
+	})
+}
+
+// UpdateModelMappingChain sets the "model_mapping_chain" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateModelMappingChain() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateModelMappingChain()
+	})
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (u *UsageLogUpsertOne) ClearModelMappingChain() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearModelMappingChain()
+	})
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (u *UsageLogUpsertOne) SetBillingTier(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetBillingTier(v)
+	})
+}
+
+// UpdateBillingTier sets the "billing_tier" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateBillingTier() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateBillingTier()
+	})
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (u *UsageLogUpsertOne) ClearBillingTier() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearBillingTier()
+	})
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (u *UsageLogUpsertOne) SetBillingMode(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetBillingMode(v)
+	})
+}
+
+// UpdateBillingMode sets the "billing_mode" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateBillingMode() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateBillingMode()
+	})
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (u *UsageLogUpsertOne) ClearBillingMode() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearBillingMode()
+	})
+}
+
 // SetGroupID sets the "group_id" field.
 func (u *UsageLogUpsertOne) SetGroupID(v int64) *UsageLogUpsertOne {
 	return u.Update(func(s *UsageLogUpsert) {
@@ -2600,6 +2856,97 @@ func (u *UsageLogUpsertBulk) ClearUpstreamModel() *UsageLogUpsertBulk {
 	})
 }
 
+// SetChannelID sets the "channel_id" field.
+func (u *UsageLogUpsertBulk) SetChannelID(v int64) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetChannelID(v)
+	})
+}
+
+// AddChannelID adds v to the "channel_id" field.
+func (u *UsageLogUpsertBulk) AddChannelID(v int64) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddChannelID(v)
+	})
+}
+
+// UpdateChannelID sets the "channel_id" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateChannelID() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateChannelID()
+	})
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (u *UsageLogUpsertBulk) ClearChannelID() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearChannelID()
+	})
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (u *UsageLogUpsertBulk) SetModelMappingChain(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetModelMappingChain(v)
+	})
+}
+
+// UpdateModelMappingChain sets the "model_mapping_chain" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateModelMappingChain() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateModelMappingChain()
+	})
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (u *UsageLogUpsertBulk) ClearModelMappingChain() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearModelMappingChain()
+	})
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (u *UsageLogUpsertBulk) SetBillingTier(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetBillingTier(v)
+	})
+}
+
+// UpdateBillingTier sets the "billing_tier" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateBillingTier() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateBillingTier()
+	})
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (u *UsageLogUpsertBulk) ClearBillingTier() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearBillingTier()
+	})
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (u *UsageLogUpsertBulk) SetBillingMode(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetBillingMode(v)
+	})
+}
+
+// UpdateBillingMode sets the "billing_mode" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateBillingMode() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateBillingMode()
+	})
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (u *UsageLogUpsertBulk) ClearBillingMode() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearBillingMode()
+	})
+}
+
 // SetGroupID sets the "group_id" field.
 func (u *UsageLogUpsertBulk) SetGroupID(v int64) *UsageLogUpsertBulk {
 	return u.Update(func(s *UsageLogUpsert) {
diff --git a/backend/ent/usagelog_update.go b/backend/ent/usagelog_update.go
index 516407b9..52f5a606 100644
--- a/backend/ent/usagelog_update.go
+++ b/backend/ent/usagelog_update.go
@@ -142,6 +142,93 @@ func (_u *UsageLogUpdate) ClearUpstreamModel() *UsageLogUpdate {
 	return _u
 }
 
+// SetChannelID sets the "channel_id" field.
+func (_u *UsageLogUpdate) SetChannelID(v int64) *UsageLogUpdate {
+	_u.mutation.ResetChannelID()
+	_u.mutation.SetChannelID(v)
+	return _u
+}
+
+// SetNillableChannelID sets the "channel_id" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableChannelID(v *int64) *UsageLogUpdate {
+	if v != nil {
+		_u.SetChannelID(*v)
+	}
+	return _u
+}
+
+// AddChannelID adds value to the "channel_id" field.
+func (_u *UsageLogUpdate) AddChannelID(v int64) *UsageLogUpdate {
+	_u.mutation.AddChannelID(v)
+	return _u
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (_u *UsageLogUpdate) ClearChannelID() *UsageLogUpdate {
+	_u.mutation.ClearChannelID()
+	return _u
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (_u *UsageLogUpdate) SetModelMappingChain(v string) *UsageLogUpdate {
+	_u.mutation.SetModelMappingChain(v)
+	return _u
+}
+
+// SetNillableModelMappingChain sets the "model_mapping_chain" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableModelMappingChain(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetModelMappingChain(*v)
+	}
+	return _u
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (_u *UsageLogUpdate) ClearModelMappingChain() *UsageLogUpdate {
+	_u.mutation.ClearModelMappingChain()
+	return _u
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (_u *UsageLogUpdate) SetBillingTier(v string) *UsageLogUpdate {
+	_u.mutation.SetBillingTier(v)
+	return _u
+}
+
+// SetNillableBillingTier sets the "billing_tier" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableBillingTier(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetBillingTier(*v)
+	}
+	return _u
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (_u *UsageLogUpdate) ClearBillingTier() *UsageLogUpdate {
+	_u.mutation.ClearBillingTier()
+	return _u
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (_u *UsageLogUpdate) SetBillingMode(v string) *UsageLogUpdate {
+	_u.mutation.SetBillingMode(v)
+	return _u
+}
+
+// SetNillableBillingMode sets the "billing_mode" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableBillingMode(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetBillingMode(*v)
+	}
+	return _u
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (_u *UsageLogUpdate) ClearBillingMode() *UsageLogUpdate {
+	_u.mutation.ClearBillingMode()
+	return _u
+}
+
 // SetGroupID sets the "group_id" field.
 func (_u *UsageLogUpdate) SetGroupID(v int64) *UsageLogUpdate {
 	_u.mutation.SetGroupID(v)
@@ -795,6 +882,21 @@ func (_u *UsageLogUpdate) check() error {
 			return &ValidationError{Name: "upstream_model", err: fmt.Errorf(`ent: validator failed for field "UsageLog.upstream_model": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ModelMappingChain(); ok {
+		if err := usagelog.ModelMappingChainValidator(v); err != nil {
+			return &ValidationError{Name: "model_mapping_chain", err: fmt.Errorf(`ent: validator failed for field "UsageLog.model_mapping_chain": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.BillingTier(); ok {
+		if err := usagelog.BillingTierValidator(v); err != nil {
+			return &ValidationError{Name: "billing_tier", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_tier": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.BillingMode(); ok {
+		if err := usagelog.BillingModeValidator(v); err != nil {
+			return &ValidationError{Name: "billing_mode", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_mode": %w`, err)}
+		}
+	}
 	if v, ok := _u.mutation.UserAgent(); ok {
 		if err := usagelog.UserAgentValidator(v); err != nil {
 			return &ValidationError{Name: "user_agent", err: fmt.Errorf(`ent: validator failed for field "UsageLog.user_agent": %w`, err)}
@@ -857,6 +959,33 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if _u.mutation.UpstreamModelCleared() {
 		_spec.ClearField(usagelog.FieldUpstreamModel, field.TypeString)
 	}
+	if value, ok := _u.mutation.ChannelID(); ok {
+		_spec.SetField(usagelog.FieldChannelID, field.TypeInt64, value)
+	}
+	if value, ok := _u.mutation.AddedChannelID(); ok {
+		_spec.AddField(usagelog.FieldChannelID, field.TypeInt64, value)
+	}
+	if _u.mutation.ChannelIDCleared() {
+		_spec.ClearField(usagelog.FieldChannelID, field.TypeInt64)
+	}
+	if value, ok := _u.mutation.ModelMappingChain(); ok {
+		_spec.SetField(usagelog.FieldModelMappingChain, field.TypeString, value)
+	}
+	if _u.mutation.ModelMappingChainCleared() {
+		_spec.ClearField(usagelog.FieldModelMappingChain, field.TypeString)
+	}
+	if value, ok := _u.mutation.BillingTier(); ok {
+		_spec.SetField(usagelog.FieldBillingTier, field.TypeString, value)
+	}
+	if _u.mutation.BillingTierCleared() {
+		_spec.ClearField(usagelog.FieldBillingTier, field.TypeString)
+	}
+	if value, ok := _u.mutation.BillingMode(); ok {
+		_spec.SetField(usagelog.FieldBillingMode, field.TypeString, value)
+	}
+	if _u.mutation.BillingModeCleared() {
+		_spec.ClearField(usagelog.FieldBillingMode, field.TypeString)
+	}
 	if value, ok := _u.mutation.InputTokens(); ok {
 		_spec.SetField(usagelog.FieldInputTokens, field.TypeInt, value)
 	}
@@ -1279,6 +1408,93 @@ func (_u *UsageLogUpdateOne) ClearUpstreamModel() *UsageLogUpdateOne {
 	return _u
 }
 
+// SetChannelID sets the "channel_id" field.
+func (_u *UsageLogUpdateOne) SetChannelID(v int64) *UsageLogUpdateOne {
+	_u.mutation.ResetChannelID()
+	_u.mutation.SetChannelID(v)
+	return _u
+}
+
+// SetNillableChannelID sets the "channel_id" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableChannelID(v *int64) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetChannelID(*v)
+	}
+	return _u
+}
+
+// AddChannelID adds value to the "channel_id" field.
+func (_u *UsageLogUpdateOne) AddChannelID(v int64) *UsageLogUpdateOne {
+	_u.mutation.AddChannelID(v)
+	return _u
+}
+
+// ClearChannelID clears the value of the "channel_id" field.
+func (_u *UsageLogUpdateOne) ClearChannelID() *UsageLogUpdateOne {
+	_u.mutation.ClearChannelID()
+	return _u
+}
+
+// SetModelMappingChain sets the "model_mapping_chain" field.
+func (_u *UsageLogUpdateOne) SetModelMappingChain(v string) *UsageLogUpdateOne {
+	_u.mutation.SetModelMappingChain(v)
+	return _u
+}
+
+// SetNillableModelMappingChain sets the "model_mapping_chain" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableModelMappingChain(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetModelMappingChain(*v)
+	}
+	return _u
+}
+
+// ClearModelMappingChain clears the value of the "model_mapping_chain" field.
+func (_u *UsageLogUpdateOne) ClearModelMappingChain() *UsageLogUpdateOne {
+	_u.mutation.ClearModelMappingChain()
+	return _u
+}
+
+// SetBillingTier sets the "billing_tier" field.
+func (_u *UsageLogUpdateOne) SetBillingTier(v string) *UsageLogUpdateOne {
+	_u.mutation.SetBillingTier(v)
+	return _u
+}
+
+// SetNillableBillingTier sets the "billing_tier" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableBillingTier(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetBillingTier(*v)
+	}
+	return _u
+}
+
+// ClearBillingTier clears the value of the "billing_tier" field.
+func (_u *UsageLogUpdateOne) ClearBillingTier() *UsageLogUpdateOne {
+	_u.mutation.ClearBillingTier()
+	return _u
+}
+
+// SetBillingMode sets the "billing_mode" field.
+func (_u *UsageLogUpdateOne) SetBillingMode(v string) *UsageLogUpdateOne {
+	_u.mutation.SetBillingMode(v)
+	return _u
+}
+
+// SetNillableBillingMode sets the "billing_mode" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableBillingMode(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetBillingMode(*v)
+	}
+	return _u
+}
+
+// ClearBillingMode clears the value of the "billing_mode" field.
+func (_u *UsageLogUpdateOne) ClearBillingMode() *UsageLogUpdateOne {
+	_u.mutation.ClearBillingMode()
+	return _u
+}
+
 // SetGroupID sets the "group_id" field.
 func (_u *UsageLogUpdateOne) SetGroupID(v int64) *UsageLogUpdateOne {
 	_u.mutation.SetGroupID(v)
@@ -1945,6 +2161,21 @@ func (_u *UsageLogUpdateOne) check() error {
 			return &ValidationError{Name: "upstream_model", err: fmt.Errorf(`ent: validator failed for field "UsageLog.upstream_model": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ModelMappingChain(); ok {
+		if err := usagelog.ModelMappingChainValidator(v); err != nil {
+			return &ValidationError{Name: "model_mapping_chain", err: fmt.Errorf(`ent: validator failed for field "UsageLog.model_mapping_chain": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.BillingTier(); ok {
+		if err := usagelog.BillingTierValidator(v); err != nil {
+			return &ValidationError{Name: "billing_tier", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_tier": %w`, err)}
+		}
+	}
+	if v, ok := _u.mutation.BillingMode(); ok {
+		if err := usagelog.BillingModeValidator(v); err != nil {
+			return &ValidationError{Name: "billing_mode", err: fmt.Errorf(`ent: validator failed for field "UsageLog.billing_mode": %w`, err)}
+		}
+	}
 	if v, ok := _u.mutation.UserAgent(); ok {
 		if err := usagelog.UserAgentValidator(v); err != nil {
 			return &ValidationError{Name: "user_agent", err: fmt.Errorf(`ent: validator failed for field "UsageLog.user_agent": %w`, err)}
@@ -2024,6 +2255,33 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if _u.mutation.UpstreamModelCleared() {
 		_spec.ClearField(usagelog.FieldUpstreamModel, field.TypeString)
 	}
+	if value, ok := _u.mutation.ChannelID(); ok {
+		_spec.SetField(usagelog.FieldChannelID, field.TypeInt64, value)
+	}
+	if value, ok := _u.mutation.AddedChannelID(); ok {
+		_spec.AddField(usagelog.FieldChannelID, field.TypeInt64, value)
+	}
+	if _u.mutation.ChannelIDCleared() {
+		_spec.ClearField(usagelog.FieldChannelID, field.TypeInt64)
+	}
+	if value, ok := _u.mutation.ModelMappingChain(); ok {
+		_spec.SetField(usagelog.FieldModelMappingChain, field.TypeString, value)
+	}
+	if _u.mutation.ModelMappingChainCleared() {
+		_spec.ClearField(usagelog.FieldModelMappingChain, field.TypeString)
+	}
+	if value, ok := _u.mutation.BillingTier(); ok {
+		_spec.SetField(usagelog.FieldBillingTier, field.TypeString, value)
+	}
+	if _u.mutation.BillingTierCleared() {
+		_spec.ClearField(usagelog.FieldBillingTier, field.TypeString)
+	}
+	if value, ok := _u.mutation.BillingMode(); ok {
+		_spec.SetField(usagelog.FieldBillingMode, field.TypeString, value)
+	}
+	if _u.mutation.BillingModeCleared() {
+		_spec.ClearField(usagelog.FieldBillingMode, field.TypeString)
+	}
 	if value, ok := _u.mutation.InputTokens(); ok {
 		_spec.SetField(usagelog.FieldInputTokens, field.TypeInt, value)
 	}
diff --git a/backend/internal/handler/admin/usage_handler.go b/backend/internal/handler/admin/usage_handler.go
index 7a3135b8..2967b384 100644
--- a/backend/internal/handler/admin/usage_handler.go
+++ b/backend/internal/handler/admin/usage_handler.go
@@ -110,6 +110,7 @@ func (h *UsageHandler) List(c *gin.Context) {
 	}
 
 	model := c.Query("model")
+	billingMode := strings.TrimSpace(c.Query("billing_mode"))
 
 	var requestType *int16
 	var stream *bool
@@ -174,6 +175,7 @@ func (h *UsageHandler) List(c *gin.Context) {
 		RequestType: requestType,
 		Stream:      stream,
 		BillingType: billingType,
+		BillingMode: billingMode,
 		StartTime:   startTime,
 		EndTime:     endTime,
 		ExactTotal:  exactTotal,
@@ -234,6 +236,7 @@ func (h *UsageHandler) Stats(c *gin.Context) {
 	}
 
 	model := c.Query("model")
+	billingMode := strings.TrimSpace(c.Query("billing_mode"))
 
 	var requestType *int16
 	var stream *bool
@@ -312,6 +315,7 @@ func (h *UsageHandler) Stats(c *gin.Context) {
 		RequestType: requestType,
 		Stream:      stream,
 		BillingType: billingType,
+		BillingMode: billingMode,
 		StartTime:   &startTime,
 		EndTime:     &endTime,
 	}
diff --git a/backend/internal/handler/dto/mappers.go b/backend/internal/handler/dto/mappers.go
index cef3a5f8..d9d65783 100644
--- a/backend/internal/handler/dto/mappers.go
+++ b/backend/internal/handler/dto/mappers.go
@@ -577,6 +577,7 @@ func usageLogFromServiceUser(l *service.UsageLog) UsageLog {
 		MediaType:             l.MediaType,
 		UserAgent:             l.UserAgent,
 		CacheTTLOverridden:    l.CacheTTLOverridden,
+		BillingMode:           l.BillingMode,
 		CreatedAt:             l.CreatedAt,
 		User:                  UserFromServiceShallow(l.User),
 		APIKey:                APIKeyFromService(l.APIKey),
diff --git a/backend/internal/handler/dto/types.go b/backend/internal/handler/dto/types.go
index 392abe2d..56b67c8c 100644
--- a/backend/internal/handler/dto/types.go
+++ b/backend/internal/handler/dto/types.go
@@ -390,6 +390,9 @@ type UsageLog struct {
 	// Cache TTL Override 标记
 	CacheTTLOverridden bool `json:"cache_ttl_overridden"`
 
+	// BillingMode 计费模式：token/image
+	BillingMode *string `json:"billing_mode,omitempty"`
+
 	CreatedAt time.Time `json:"created_at"`
 
 	User         *User             `json:"user,omitempty"`
diff --git a/backend/internal/pkg/usagestats/usage_log_types.go b/backend/internal/pkg/usagestats/usage_log_types.go
index 44cddb6a..eb2c81d3 100644
--- a/backend/internal/pkg/usagestats/usage_log_types.go
+++ b/backend/internal/pkg/usagestats/usage_log_types.go
@@ -230,6 +230,7 @@ type UsageLogFilters struct {
 	RequestType *int16
 	Stream      *bool
 	BillingType *int8
+	BillingMode string
 	StartTime   *time.Time
 	EndTime     *time.Time
 	// ExactTotal requests exact COUNT(*) for pagination. Default false for fast large-table paging.
diff --git a/backend/internal/repository/usage_log_repo.go b/backend/internal/repository/usage_log_repo.go
index c40beffd..376f1029 100644
--- a/backend/internal/repository/usage_log_repo.go
+++ b/backend/internal/repository/usage_log_repo.go
@@ -28,7 +28,7 @@ import (
 	gocache "github.com/patrickmn/go-cache"
 )
 
-const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, media_type, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, created_at"
+const usageLogSelectColumns = "id, user_id, api_key_id, account_id, request_id, model, requested_model, upstream_model, group_id, subscription_id, input_tokens, output_tokens, cache_creation_tokens, cache_read_tokens, cache_creation_5m_tokens, cache_creation_1h_tokens, input_cost, output_cost, cache_creation_cost, cache_read_cost, total_cost, actual_cost, rate_multiplier, account_rate_multiplier, billing_type, request_type, stream, openai_ws_mode, duration_ms, first_token_ms, user_agent, ip_address, image_count, image_size, media_type, service_tier, reasoning_effort, inbound_endpoint, upstream_endpoint, cache_ttl_overridden, channel_id, model_mapping_chain, billing_tier, billing_mode, created_at"
 
 // usageLogInsertArgTypes must stay in the same order as:
 //  1. prepareUsageLogInsert().args
@@ -80,6 +80,7 @@ var usageLogInsertArgTypes = [...]string{
 	"bigint",      // channel_id
 	"text",        // model_mapping_chain
 	"text",        // billing_tier
+	"text",        // billing_mode
 	"timestamptz", // created_at
 }
 
@@ -356,6 +357,7 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		) VALUES (
 			$1, $2, $3, $4, $5, $6, $7,
@@ -363,7 +365,7 @@ func (r *usageLogRepository) createSingle(ctx context.Context, sqlq sqlExecutor,
 			$10, $11, $12, $13,
 			$14, $15,
 			$16, $17, $18, $19, $20, $21,
-			$22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43
+			$22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 		RETURNING id, created_at
@@ -791,10 +793,11 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(keys)*44)
+	args := make([]any, 0, len(keys)*45)
 	argPos := 1
 	for idx, key := range keys {
 		if idx > 0 {
@@ -865,6 +868,7 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				channel_id,
 				model_mapping_chain,
 				billing_tier,
+				billing_mode,
 				created_at
 			)
 			SELECT
@@ -910,6 +914,7 @@ func buildUsageLogBatchInsertQuery(keys []string, preparedByKey map[string]usage
 				channel_id,
 				model_mapping_chain,
 				billing_tier,
+				billing_mode,
 				created_at
 			FROM input
 			ON CONFLICT (request_id, api_key_id) DO NOTHING
@@ -995,10 +1000,11 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		) AS (VALUES `)
 
-	args := make([]any, 0, len(preparedList)*43)
+	args := make([]any, 0, len(preparedList)*44)
 	argPos := 1
 	for idx, prepared := range preparedList {
 		if idx > 0 {
@@ -1066,6 +1072,7 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		)
 		SELECT
@@ -1111,6 +1118,7 @@ func buildUsageLogBestEffortInsertQuery(preparedList []usageLogInsertPrepared) (
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		FROM input
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
@@ -1164,6 +1172,7 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			channel_id,
 			model_mapping_chain,
 			billing_tier,
+			billing_mode,
 			created_at
 		) VALUES (
 			$1, $2, $3, $4, $5, $6, $7,
@@ -1171,7 +1180,7 @@ func execUsageLogInsertNoResult(ctx context.Context, sqlq sqlExecutor, prepared
 			$10, $11, $12, $13,
 			$14, $15,
 			$16, $17, $18, $19, $20, $21,
-			$22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43
+			$22, $23, $24, $25, $26, $27, $28, $29, $30, $31, $32, $33, $34, $35, $36, $37, $38, $39, $40, $41, $42, $43, $44
 		)
 		ON CONFLICT (request_id, api_key_id) DO NOTHING
 	`, prepared.args...)
@@ -1206,6 +1215,7 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 	channelID := nullInt64(log.ChannelID)
 	modelMappingChain := nullString(log.ModelMappingChain)
 	billingTier := nullString(log.BillingTier)
+	billingMode := nullString(log.BillingMode)
 	requestedModel := strings.TrimSpace(log.RequestedModel)
 	if requestedModel == "" {
 		requestedModel = strings.TrimSpace(log.Model)
@@ -1265,6 +1275,7 @@ func prepareUsageLogInsert(log *service.UsageLog) usageLogInsertPrepared {
 			channelID,
 			modelMappingChain,
 			billingTier,
+			billingMode,
 			createdAt,
 		},
 	}
@@ -2597,8 +2608,8 @@ type UsageLogFilters = usagestats.UsageLogFilters
 
 // ListWithFilters lists usage logs with optional filters (for admin)
 func (r *usageLogRepository) ListWithFilters(ctx context.Context, params pagination.PaginationParams, filters UsageLogFilters) ([]service.UsageLog, *pagination.PaginationResult, error) {
-	conditions := make([]string, 0, 8)
-	args := make([]any, 0, 8)
+	conditions := make([]string, 0, 9)
+	args := make([]any, 0, 9)
 
 	if filters.UserID > 0 {
 		conditions = append(conditions, fmt.Sprintf("user_id = $%d", len(args)+1))
@@ -2622,6 +2633,10 @@ func (r *usageLogRepository) ListWithFilters(ctx context.Context, params paginat
 		conditions = append(conditions, fmt.Sprintf("billing_type = $%d", len(args)+1))
 		args = append(args, int16(*filters.BillingType))
 	}
+	if filters.BillingMode != "" {
+		conditions = append(conditions, fmt.Sprintf("billing_mode = $%d", len(args)+1))
+		args = append(args, filters.BillingMode)
+	}
 	if filters.StartTime != nil {
 		conditions = append(conditions, fmt.Sprintf("created_at >= $%d", len(args)+1))
 		args = append(args, *filters.StartTime)
@@ -3289,6 +3304,10 @@ func (r *usageLogRepository) GetStatsWithFilters(ctx context.Context, filters Us
 		conditions = append(conditions, fmt.Sprintf("billing_type = $%d", len(args)+1))
 		args = append(args, int16(*filters.BillingType))
 	}
+	if filters.BillingMode != "" {
+		conditions = append(conditions, fmt.Sprintf("billing_mode = $%d", len(args)+1))
+		args = append(args, filters.BillingMode)
+	}
 	if filters.StartTime != nil {
 		conditions = append(conditions, fmt.Sprintf("created_at >= $%d", len(args)+1))
 		args = append(args, *filters.StartTime)
@@ -3995,6 +4014,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		channelID             sql.NullInt64
 		modelMappingChain     sql.NullString
 		billingTier           sql.NullString
+		billingMode           sql.NullString
 		createdAt             time.Time
 	)
 
@@ -4042,6 +4062,7 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 		&channelID,
 		&modelMappingChain,
 		&billingTier,
+		&billingMode,
 		&createdAt,
 	); err != nil {
 		return nil, err
@@ -4136,6 +4157,9 @@ func scanUsageLog(scanner interface{ Scan(...any) error }) (*service.UsageLog, e
 	if billingTier.Valid {
 		log.BillingTier = &billingTier.String
 	}
+	if billingMode.Valid {
+		log.BillingMode = &billingMode.String
+	}
 
 	return log, nil
 }
diff --git a/backend/internal/service/gateway_service.go b/backend/internal/service/gateway_service.go
index 89bcb75c..7aeffa16 100644
--- a/backend/internal/service/gateway_service.go
+++ b/backend/internal/service/gateway_service.go
@@ -7863,6 +7863,17 @@ func (s *GatewayService) RecordUsage(ctx context.Context, input *RecordUsageInpu
 		CreatedAt:             time.Now(),
 	}
 
+	// 设置计费模式
+	if result.MediaType != "image" && result.MediaType != "video" && result.MediaType != "prompt" {
+		if result.ImageCount > 0 {
+			billingMode := "image"
+			usageLog.BillingMode = &billingMode
+		} else {
+			billingMode := "token"
+			usageLog.BillingMode = &billingMode
+		}
+	}
+
 	// 添加 UserAgent
 	if input.UserAgent != "" {
 		usageLog.UserAgent = &input.UserAgent
@@ -8073,6 +8084,15 @@ func (s *GatewayService) RecordUsageWithLongContext(ctx context.Context, input *
 		CreatedAt:             time.Now(),
 	}
 
+	// 设置计费模式
+	if result.ImageCount > 0 {
+		billingMode := "image"
+		usageLog.BillingMode = &billingMode
+	} else {
+		billingMode := "token"
+		usageLog.BillingMode = &billingMode
+	}
+
 	// 添加 UserAgent
 	if input.UserAgent != "" {
 		usageLog.UserAgent = &input.UserAgent
diff --git a/backend/internal/service/openai_gateway_service.go b/backend/internal/service/openai_gateway_service.go
index e85f0705..ddef3d31 100644
--- a/backend/internal/service/openai_gateway_service.go
+++ b/backend/internal/service/openai_gateway_service.go
@@ -4204,6 +4204,11 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		FirstTokenMs:          result.FirstTokenMs,
 		CreatedAt:             time.Now(),
 	}
+	// 设置计费模式（OpenAI 网关都是 token 计费）
+	{
+		billingMode := "token"
+		usageLog.BillingMode = &billingMode
+	}
 	// 添加 UserAgent
 	if input.UserAgent != "" {
 		usageLog.UserAgent = &input.UserAgent
diff --git a/backend/internal/service/usage_log.go b/backend/internal/service/usage_log.go
index da5773f5..b4755d95 100644
--- a/backend/internal/service/usage_log.go
+++ b/backend/internal/service/usage_log.go
@@ -110,6 +110,8 @@ type UsageLog struct {
 	ModelMappingChain *string
 	// BillingTier 计费层级标签（per_request/image 模式）
 	BillingTier *string
+	// BillingMode 计费模式：token/image（sora 路径为 nil）
+	BillingMode *string
 	// ServiceTier records the OpenAI service tier used for billing, e.g. "priority" / "flex".
 	ServiceTier *string
 	// ReasoningEffort is the request's reasoning effort level.
diff --git a/backend/migrations/087_usage_log_billing_mode.sql b/backend/migrations/087_usage_log_billing_mode.sql
new file mode 100644
index 00000000..8552be0b
--- /dev/null
+++ b/backend/migrations/087_usage_log_billing_mode.sql
@@ -0,0 +1,2 @@
+-- Add billing_mode to usage_logs (records the billing mode: token/per_request/image)
+ALTER TABLE usage_logs ADD COLUMN IF NOT EXISTS billing_mode VARCHAR(20);
diff --git a/frontend/src/api/admin/usage.ts b/frontend/src/api/admin/usage.ts
index bd7e3e57..d21b28dc 100644
--- a/frontend/src/api/admin/usage.ts
+++ b/frontend/src/api/admin/usage.ts
@@ -80,6 +80,7 @@ export interface CreateUsageCleanupTaskRequest {
 export interface AdminUsageQueryParams extends UsageQueryParams {
   user_id?: number
   exact_total?: boolean
+  billing_mode?: string
 }
 
 // ==================== API Functions ====================
diff --git a/frontend/src/components/admin/usage/UsageFilters.vue b/frontend/src/components/admin/usage/UsageFilters.vue
index ee5020e7..66c2b4fa 100644
--- a/frontend/src/components/admin/usage/UsageFilters.vue
+++ b/frontend/src/components/admin/usage/UsageFilters.vue
@@ -133,6 +133,12 @@
           <Select v-model="filters.billing_type" :options="billingTypeOptions" @change="emitChange" />
         </div>
 
+        <!-- Billing Mode Filter -->
+        <div class="w-full sm:w-auto sm:min-w-[200px]">
+          <label class="input-label">{{ t('admin.usage.billingMode') }}</label>
+          <Select v-model="filters.billing_mode" :options="billingModeOptions" @change="emitChange" />
+        </div>
+
         <!-- Group Filter -->
         <div class="w-full sm:w-auto sm:min-w-[200px]">
           <label class="input-label">{{ t('admin.usage.group') }}</label>
@@ -232,6 +238,13 @@ const billingTypeOptions = ref<SelectOption[]>([
   { value: 1, label: t('admin.usage.billingTypeSubscription') }
 ])
 
+const billingModeOptions = ref<SelectOption[]>([
+  { value: null, label: t('admin.usage.allBillingModes') },
+  { value: 'token', label: t('admin.usage.billingModeToken') },
+  { value: 'per_request', label: t('admin.usage.billingModePerRequest') },
+  { value: 'image', label: t('admin.usage.billingModeImage') }
+])
+
 const emitChange = () => emit('change')
 
 const debounceUserSearch = () => {
diff --git a/frontend/src/components/admin/usage/UsageTable.vue b/frontend/src/components/admin/usage/UsageTable.vue
index 4a42ab05..44f1805b 100644
--- a/frontend/src/components/admin/usage/UsageTable.vue
+++ b/frontend/src/components/admin/usage/UsageTable.vue
@@ -69,6 +69,12 @@
           </span>
         </template>
 
+        <template #cell-billing_mode="{ row }">
+          <span class="inline-flex items-center rounded px-2 py-0.5 text-xs font-medium" :class="getBillingModeBadgeClass(row.billing_mode)">
+            {{ getBillingModeLabel(row.billing_mode) }}
+          </span>
+        </template>
+
         <template #cell-tokens="{ row }">
           <!-- 图片生成请求 -->
           <div v-if="row.image_count > 0" class="flex items-center gap-1.5">
@@ -350,6 +356,18 @@ const getRequestTypeBadgeClass = (row: AdminUsageLog): string => {
   return 'bg-amber-100 text-amber-800 dark:bg-amber-900 dark:text-amber-200'
 }
 
+const getBillingModeLabel = (mode: string | null | undefined): string => {
+  if (mode === 'per_request') return t('admin.usage.billingModePerRequest')
+  if (mode === 'image') return t('admin.usage.billingModeImage')
+  return t('admin.usage.billingModeToken')
+}
+
+const getBillingModeBadgeClass = (mode: string | null | undefined): string => {
+  if (mode === 'per_request') return 'bg-blue-100 text-blue-800 dark:bg-blue-900 dark:text-blue-200'
+  if (mode === 'image') return 'bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200'
+  return 'bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-200'
+}
+
 const formatCacheTokens = (tokens: number): string => {
   if (tokens >= 1000000) return `${(tokens / 1000000).toFixed(1)}M`
   if (tokens >= 1000) return `${(tokens / 1000).toFixed(1)}K`
diff --git a/frontend/src/i18n/locales/en.ts b/frontend/src/i18n/locales/en.ts
index 8277a134..ee66db90 100644
--- a/frontend/src/i18n/locales/en.ts
+++ b/frontend/src/i18n/locales/en.ts
@@ -3356,6 +3356,11 @@ export default {
       allBillingTypes: 'All Billing Types',
       billingTypeBalance: 'Balance',
       billingTypeSubscription: 'Subscription',
+      billingMode: 'Billing Mode',
+      billingModeToken: 'Token',
+      billingModePerRequest: 'Per Request',
+      billingModeImage: 'Image',
+      allBillingModes: 'All Billing Modes',
       ipAddress: 'IP',
       clickToViewBalance: 'Click to view balance history',
       failedToLoadUser: 'Failed to load user info',
diff --git a/frontend/src/i18n/locales/zh.ts b/frontend/src/i18n/locales/zh.ts
index e4406b0e..60ddb0d1 100644
--- a/frontend/src/i18n/locales/zh.ts
+++ b/frontend/src/i18n/locales/zh.ts
@@ -3515,6 +3515,11 @@ export default {
       allBillingTypes: '全部计费类型',
       billingTypeBalance: '钱包余额',
       billingTypeSubscription: '订阅套餐',
+      billingMode: '计费模式',
+      billingModeToken: '按量',
+      billingModePerRequest: '按次',
+      billingModeImage: '按次(图片)',
+      allBillingModes: '全部计费模式',
       ipAddress: 'IP',
       clickToViewBalance: '点击查看充值记录',
       failedToLoadUser: '加载用户信息失败',
diff --git a/frontend/src/types/index.ts b/frontend/src/types/index.ts
index 54ef1a10..20412de0 100644
--- a/frontend/src/types/index.ts
+++ b/frontend/src/types/index.ts
@@ -1036,6 +1036,9 @@ export interface UsageLog {
   // Cache TTL Override
   cache_ttl_overridden: boolean
 
+  // 计费模式
+  billing_mode?: string | null
+
   created_at: string
 
   user?: User
diff --git a/frontend/src/views/admin/UsageView.vue b/frontend/src/views/admin/UsageView.vue
index 4911f7b3..6ec36c86 100644
--- a/frontend/src/views/admin/UsageView.vue
+++ b/frontend/src/views/admin/UsageView.vue
@@ -392,7 +392,7 @@ const resetFilters = () => {
   const range = getLast24HoursRangeDates()
   startDate.value = range.start
   endDate.value = range.end
-  filters.value = { start_date: startDate.value, end_date: endDate.value, request_type: undefined, billing_type: null }
+  filters.value = { start_date: startDate.value, end_date: endDate.value, request_type: undefined, billing_type: null, billing_mode: undefined }
   granularity.value = getGranularityForRange(startDate.value, endDate.value)
   applyFilters()
 }
@@ -477,6 +477,7 @@ const allColumns = computed(() => [
   { key: 'endpoint', label: t('usage.endpoint'), sortable: false },
   { key: 'group', label: t('admin.usage.group'), sortable: false },
   { key: 'stream', label: t('usage.type'), sortable: false },
+  { key: 'billing_mode', label: t('admin.usage.billingMode'), sortable: false },
   { key: 'tokens', label: t('usage.tokens'), sortable: false },
   { key: 'cost', label: t('usage.cost'), sortable: false },
   { key: 'first_token', label: t('usage.firstToken'), sortable: false },