diff --git a/backend/internal/pkg/openai/constants.go b/backend/internal/pkg/openai/constants.go
index b0a31a5f..49e38bf8 100644
--- a/backend/internal/pkg/openai/constants.go
+++ b/backend/internal/pkg/openai/constants.go
@@ -16,6 +16,8 @@ type Model struct {
// DefaultModels OpenAI models list
var DefaultModels = []Model{
{ID: "gpt-5.4", Object: "model", Created: 1738368000, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.4"},
+ {ID: "gpt-5.4-mini", Object: "model", Created: 1738368000, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.4 Mini"},
+ {ID: "gpt-5.4-nano", Object: "model", Created: 1738368000, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.4 Nano"},
{ID: "gpt-5.3-codex", Object: "model", Created: 1735689600, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.3 Codex"},
{ID: "gpt-5.3-codex-spark", Object: "model", Created: 1735689600, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.3 Codex Spark"},
{ID: "gpt-5.2", Object: "model", Created: 1733875200, OwnedBy: "openai", Type: "model", DisplayName: "GPT-5.2"},
diff --git a/backend/internal/service/billing_service.go b/backend/internal/service/billing_service.go
index 68d7a8f9..99fea0b0 100644
--- a/backend/internal/service/billing_service.go
+++ b/backend/internal/service/billing_service.go
@@ -221,6 +221,18 @@ func (s *BillingService) initFallbackPricing() {
LongContextInputMultiplier: openAIGPT54LongContextInputMultiplier,
LongContextOutputMultiplier: openAIGPT54LongContextOutputMultiplier,
}
+ s.fallbackPrices["gpt-5.4-mini"] = &ModelPricing{
+ InputPricePerToken: 7.5e-7,
+ OutputPricePerToken: 4.5e-6,
+ CacheReadPricePerToken: 7.5e-8,
+ SupportsCacheBreakdown: false,
+ }
+ s.fallbackPrices["gpt-5.4-nano"] = &ModelPricing{
+ InputPricePerToken: 2e-7,
+ OutputPricePerToken: 1.25e-6,
+ CacheReadPricePerToken: 2e-8,
+ SupportsCacheBreakdown: false,
+ }
// OpenAI GPT-5.2（本地兜底）
s.fallbackPrices["gpt-5.2"] = &ModelPricing{
InputPricePerToken: 1.75e-6,
@@ -294,6 +306,10 @@ func (s *BillingService) getFallbackPricing(model string) *ModelPricing {
if strings.Contains(modelLower, "gpt-5") || strings.Contains(modelLower, "codex") {
normalized := normalizeCodexModel(modelLower)
switch normalized {
+ case "gpt-5.4-mini":
+ return s.fallbackPrices["gpt-5.4-mini"]
+ case "gpt-5.4-nano":
+ return s.fallbackPrices["gpt-5.4-nano"]
case "gpt-5.4":
return s.fallbackPrices["gpt-5.4"]
case "gpt-5.2":
diff --git a/backend/internal/service/billing_service_test.go b/backend/internal/service/billing_service_test.go
index 45bbdcee..10943422 100644
--- a/backend/internal/service/billing_service_test.go
+++ b/backend/internal/service/billing_service_test.go
@@ -174,6 +174,30 @@ func TestGetModelPricing_OpenAIGPT54Fallback(t *testing.T) {
require.InDelta(t, 1.5, pricing.LongContextOutputMultiplier, 1e-12)
}
+func TestGetModelPricing_OpenAIGPT54MiniFallback(t *testing.T) {
+ svc := newTestBillingService()
+
+ pricing, err := svc.GetModelPricing("gpt-5.4-mini")
+ require.NoError(t, err)
+ require.NotNil(t, pricing)
+ require.InDelta(t, 7.5e-7, pricing.InputPricePerToken, 1e-12)
+ require.InDelta(t, 4.5e-6, pricing.OutputPricePerToken, 1e-12)
+ require.InDelta(t, 7.5e-8, pricing.CacheReadPricePerToken, 1e-12)
+ require.Zero(t, pricing.LongContextInputThreshold)
+}
+
+func TestGetModelPricing_OpenAIGPT54NanoFallback(t *testing.T) {
+ svc := newTestBillingService()
+
+ pricing, err := svc.GetModelPricing("gpt-5.4-nano")
+ require.NoError(t, err)
+ require.NotNil(t, pricing)
+ require.InDelta(t, 2e-7, pricing.InputPricePerToken, 1e-12)
+ require.InDelta(t, 1.25e-6, pricing.OutputPricePerToken, 1e-12)
+ require.InDelta(t, 2e-8, pricing.CacheReadPricePerToken, 1e-12)
+ require.Zero(t, pricing.LongContextInputThreshold)
+}
+
func TestCalculateCost_OpenAIGPT54LongContextAppliesWholeSessionMultipliers(t *testing.T) {
svc := newTestBillingService()
@@ -210,6 +234,8 @@ func TestGetFallbackPricing_FamilyMatching(t *testing.T) {
{name: "gemini unknown no fallback", model: "gemini-2.0-pro", expectNilPricing: true},
{name: "openai gpt5.1", model: "gpt-5.1", expectedInput: 1.25e-6},
{name: "openai gpt5.4", model: "gpt-5.4", expectedInput: 2.5e-6},
+ {name: "openai gpt5.4 mini", model: "gpt-5.4-mini", expectedInput: 7.5e-7},
+ {name: "openai gpt5.4 nano", model: "gpt-5.4-nano", expectedInput: 2e-7},
{name: "openai gpt5.3 codex", model: "gpt-5.3-codex", expectedInput: 1.5e-6},
{name: "openai gpt5.1 codex max alias", model: "gpt-5.1-codex-max", expectedInput: 1.5e-6},
{name: "openai codex mini latest alias", model: "codex-mini-latest", expectedInput: 1.5e-6},
@@ -564,6 +590,40 @@ func TestCalculateCostWithServiceTier_FlexAppliesHalfMultiplier(t *testing.T) {
require.InDelta(t, baseCost.TotalCost*0.5, flexCost.TotalCost, 1e-10)
}
+func TestCalculateCostWithServiceTier_Gpt54MiniPriorityFallsBackToTierMultiplier(t *testing.T) {
+ svc := newTestBillingService()
+ tokens := UsageTokens{InputTokens: 120, OutputTokens: 30, CacheCreationTokens: 12, CacheReadTokens: 8}
+
+ baseCost, err := svc.CalculateCost("gpt-5.4-mini", tokens, 1.0)
+ require.NoError(t, err)
+
+ priorityCost, err := svc.CalculateCostWithServiceTier("gpt-5.4-mini", tokens, 1.0, "priority")
+ require.NoError(t, err)
+
+ require.InDelta(t, baseCost.InputCost*2, priorityCost.InputCost, 1e-10)
+ require.InDelta(t, baseCost.OutputCost*2, priorityCost.OutputCost, 1e-10)
+ require.InDelta(t, baseCost.CacheCreationCost*2, priorityCost.CacheCreationCost, 1e-10)
+ require.InDelta(t, baseCost.CacheReadCost*2, priorityCost.CacheReadCost, 1e-10)
+ require.InDelta(t, baseCost.TotalCost*2, priorityCost.TotalCost, 1e-10)
+}
+
+func TestCalculateCostWithServiceTier_Gpt54NanoFlexAppliesHalfMultiplier(t *testing.T) {
+ svc := newTestBillingService()
+ tokens := UsageTokens{InputTokens: 100, OutputTokens: 50, CacheCreationTokens: 40, CacheReadTokens: 20}
+
+ baseCost, err := svc.CalculateCost("gpt-5.4-nano", tokens, 1.0)
+ require.NoError(t, err)
+
+ flexCost, err := svc.CalculateCostWithServiceTier("gpt-5.4-nano", tokens, 1.0, "flex")
+ require.NoError(t, err)
+
+ require.InDelta(t, baseCost.InputCost*0.5, flexCost.InputCost, 1e-10)
+ require.InDelta(t, baseCost.OutputCost*0.5, flexCost.OutputCost, 1e-10)
+ require.InDelta(t, baseCost.CacheCreationCost*0.5, flexCost.CacheCreationCost, 1e-10)
+ require.InDelta(t, baseCost.CacheReadCost*0.5, flexCost.CacheReadCost, 1e-10)
+ require.InDelta(t, baseCost.TotalCost*0.5, flexCost.TotalCost, 1e-10)
+}
+
func TestCalculateCostWithServiceTier_PriorityFallsBackToTierMultiplierWithoutExplicitPriorityPrice(t *testing.T) {
svc := newTestBillingService()
tokens := UsageTokens{InputTokens: 120, OutputTokens: 30, CacheCreationTokens: 12, CacheReadTokens: 8}
diff --git a/backend/internal/service/openai_codex_transform.go b/backend/internal/service/openai_codex_transform.go
index 0ae55ad3..d0534d8c 100644
--- a/backend/internal/service/openai_codex_transform.go
+++ b/backend/internal/service/openai_codex_transform.go
@@ -7,6 +7,8 @@ import (
var codexModelMap = map[string]string{
"gpt-5.4": "gpt-5.4",
+ "gpt-5.4-mini": "gpt-5.4-mini",
+ "gpt-5.4-nano": "gpt-5.4-nano",
"gpt-5.4-none": "gpt-5.4",
"gpt-5.4-low": "gpt-5.4",
"gpt-5.4-medium": "gpt-5.4",
@@ -225,6 +227,12 @@ func normalizeCodexModel(model string) string {
normalized := strings.ToLower(modelID)
+ if strings.Contains(normalized, "gpt-5.4-mini") || strings.Contains(normalized, "gpt 5.4 mini") {
+ return "gpt-5.4-mini"
+ }
+ if strings.Contains(normalized, "gpt-5.4-nano") || strings.Contains(normalized, "gpt 5.4 nano") {
+ return "gpt-5.4-nano"
+ }
if strings.Contains(normalized, "gpt-5.4") || strings.Contains(normalized, "gpt 5.4") {
return "gpt-5.4"
}
diff --git a/backend/internal/service/openai_codex_transform_test.go b/backend/internal/service/openai_codex_transform_test.go
index b52f0566..eab88c09 100644
--- a/backend/internal/service/openai_codex_transform_test.go
+++ b/backend/internal/service/openai_codex_transform_test.go
@@ -238,6 +238,10 @@ func TestNormalizeCodexModel_Gpt53(t *testing.T) {
"gpt-5.4-high": "gpt-5.4",
"gpt-5.4-chat-latest": "gpt-5.4",
"gpt 5.4": "gpt-5.4",
+ "gpt-5.4-mini": "gpt-5.4-mini",
+ "gpt 5.4 mini": "gpt-5.4-mini",
+ "gpt-5.4-nano": "gpt-5.4-nano",
+ "gpt 5.4 nano": "gpt-5.4-nano",
"gpt-5.3": "gpt-5.3-codex",
"gpt-5.3-codex": "gpt-5.3-codex",
"gpt-5.3-codex-xhigh": "gpt-5.3-codex",
diff --git a/backend/internal/service/pricing_service.go b/backend/internal/service/pricing_service.go
index 7ed4e7e4..10440c60 100644
--- a/backend/internal/service/pricing_service.go
+++ b/backend/internal/service/pricing_service.go
@@ -34,6 +34,22 @@ var (
Mode: "chat",
SupportsPromptCaching: true,
}
+ openAIGPT54MiniFallbackPricing = &LiteLLMModelPricing{
+ InputCostPerToken: 7.5e-07,
+ OutputCostPerToken: 4.5e-06,
+ CacheReadInputTokenCost: 7.5e-08,
+ LiteLLMProvider: "openai",
+ Mode: "chat",
+ SupportsPromptCaching: true,
+ }
+ openAIGPT54NanoFallbackPricing = &LiteLLMModelPricing{
+ InputCostPerToken: 2e-07,
+ OutputCostPerToken: 1.25e-06,
+ CacheReadInputTokenCost: 2e-08,
+ LiteLLMProvider: "openai",
+ Mode: "chat",
+ SupportsPromptCaching: true,
+ }
)
// LiteLLMModelPricing LiteLLM价格数据结构
@@ -723,6 +739,18 @@ func (s *PricingService) matchOpenAIModel(model string) *LiteLLMModelPricing {
}
}
+ if strings.HasPrefix(model, "gpt-5.4-mini") {
+ logger.With(zap.String("component", "service.pricing")).
+ Info(fmt.Sprintf("[Pricing] OpenAI fallback matched %s -> %s", model, "gpt-5.4-mini(static)"))
+ return openAIGPT54MiniFallbackPricing
+ }
+
+ if strings.HasPrefix(model, "gpt-5.4-nano") {
+ logger.With(zap.String("component", "service.pricing")).
+ Info(fmt.Sprintf("[Pricing] OpenAI fallback matched %s -> %s", model, "gpt-5.4-nano(static)"))
+ return openAIGPT54NanoFallbackPricing
+ }
+
if strings.HasPrefix(model, "gpt-5.4") {
logger.With(zap.String("component", "service.pricing")).
Info(fmt.Sprintf("[Pricing] OpenAI fallback matched %s -> %s", model, "gpt-5.4(static)"))
diff --git a/backend/internal/service/pricing_service_test.go b/backend/internal/service/pricing_service_test.go
index 775024fd..13a5c70c 100644
--- a/backend/internal/service/pricing_service_test.go
+++ b/backend/internal/service/pricing_service_test.go
@@ -98,6 +98,36 @@ func TestGetModelPricing_Gpt54UsesStaticFallbackWhenRemoteMissing(t *testing.T)
require.InDelta(t, 1.5, got.LongContextOutputCostMultiplier, 1e-12)
}
+func TestGetModelPricing_Gpt54MiniUsesDedicatedStaticFallbackWhenRemoteMissing(t *testing.T) {
+ svc := &PricingService{
+ pricingData: map[string]*LiteLLMModelPricing{
+ "gpt-5.1-codex": {InputCostPerToken: 1.25e-6},
+ },
+ }
+
+ got := svc.GetModelPricing("gpt-5.4-mini")
+ require.NotNil(t, got)
+ require.InDelta(t, 7.5e-7, got.InputCostPerToken, 1e-12)
+ require.InDelta(t, 4.5e-6, got.OutputCostPerToken, 1e-12)
+ require.InDelta(t, 7.5e-8, got.CacheReadInputTokenCost, 1e-12)
+ require.Zero(t, got.LongContextInputTokenThreshold)
+}
+
+func TestGetModelPricing_Gpt54NanoUsesDedicatedStaticFallbackWhenRemoteMissing(t *testing.T) {
+ svc := &PricingService{
+ pricingData: map[string]*LiteLLMModelPricing{
+ "gpt-5.1-codex": {InputCostPerToken: 1.25e-6},
+ },
+ }
+
+ got := svc.GetModelPricing("gpt-5.4-nano")
+ require.NotNil(t, got)
+ require.InDelta(t, 2e-7, got.InputCostPerToken, 1e-12)
+ require.InDelta(t, 1.25e-6, got.OutputCostPerToken, 1e-12)
+ require.InDelta(t, 2e-8, got.CacheReadInputTokenCost, 1e-12)
+ require.Zero(t, got.LongContextInputTokenThreshold)
+}
+
func TestParsePricingData_PreservesPriorityAndServiceTierFields(t *testing.T) {
raw := map[string]any{
"gpt-5.4": map[string]any{
diff --git a/backend/resources/model-pricing/model_prices_and_context_window.json b/backend/resources/model-pricing/model_prices_and_context_window.json
index 72860bf9..0a096257 100644
--- a/backend/resources/model-pricing/model_prices_and_context_window.json
+++ b/backend/resources/model-pricing/model_prices_and_context_window.json
@@ -5173,6 +5173,71 @@
"supports_tool_choice": true,
"supports_vision": true
},
+ "gpt-5.4-mini": {
+ "cache_read_input_token_cost": 7.5e-08,
+ "input_cost_per_token": 7.5e-07,
+ "litellm_provider": "openai",
+ "max_input_tokens": 400000,
+ "max_output_tokens": 128000,
+ "max_tokens": 128000,
+ "mode": "chat",
+ "output_cost_per_token": 4.5e-06,
+ "supported_endpoints": [
+ "/v1/chat/completions",
+ "/v1/batch",
+ "/v1/responses"
+ ],
+ "supported_modalities": [
+ "text",
+ "image"
+ ],
+ "supported_output_modalities": [
+ "text"
+ ],
+ "supports_function_calling": true,
+ "supports_native_streaming": true,
+ "supports_parallel_function_calling": true,
+ "supports_pdf_input": true,
+ "supports_prompt_caching": true,
+ "supports_reasoning": true,
+ "supports_response_schema": true,
+ "supports_service_tier": true,
+ "supports_system_messages": true,
+ "supports_tool_choice": true,
+ "supports_vision": true
+ },
+ "gpt-5.4-nano": {
+ "cache_read_input_token_cost": 2e-08,
+ "input_cost_per_token": 2e-07,
+ "litellm_provider": "openai",
+ "max_input_tokens": 400000,
+ "max_output_tokens": 128000,
+ "max_tokens": 128000,
+ "mode": "chat",
+ "output_cost_per_token": 1.25e-06,
+ "supported_endpoints": [
+ "/v1/chat/completions",
+ "/v1/batch",
+ "/v1/responses"
+ ],
+ "supported_modalities": [
+ "text",
+ "image"
+ ],
+ "supported_output_modalities": [
+ "text"
+ ],
+ "supports_function_calling": true,
+ "supports_native_streaming": true,
+ "supports_parallel_function_calling": true,
+ "supports_pdf_input": true,
+ "supports_prompt_caching": true,
+ "supports_reasoning": true,
+ "supports_response_schema": true,
+ "supports_system_messages": true,
+ "supports_tool_choice": true,
+ "supports_vision": true
+ },
"gpt-5.3-codex": {
"cache_read_input_token_cost": 1.75e-07,
"cache_read_input_token_cost_priority": 3.5e-07,
diff --git a/frontend/src/components/keys/UseKeyModal.vue b/frontend/src/components/keys/UseKeyModal.vue
index b478c50a..3e5cff83 100644
--- a/frontend/src/components/keys/UseKeyModal.vue
+++ b/frontend/src/components/keys/UseKeyModal.vue
@@ -705,6 +705,38 @@ function generateOpenCodeConfig(platform: string, baseUrl: string, apiKey: strin
xhigh: {}
}
},
+ 'gpt-5.4-mini': {
+ name: 'GPT-5.4 Mini',
+ limit: {
+ context: 400000,
+ output: 128000
+ },
+ options: {
+ store: false
+ },
+ variants: {
+ low: {},
+ medium: {},
+ high: {},
+ xhigh: {}
+ }
+ },
+ 'gpt-5.4-nano': {
+ name: 'GPT-5.4 Nano',
+ limit: {
+ context: 400000,
+ output: 128000
+ },
+ options: {
+ store: false
+ },
+ variants: {
+ low: {},
+ medium: {},
+ high: {},
+ xhigh: {}
+ }
+ },
'gpt-5.3-codex-spark': {
name: 'GPT-5.3 Codex Spark',
limit: {
diff --git a/frontend/src/components/keys/__tests__/UseKeyModal.spec.ts b/frontend/src/components/keys/__tests__/UseKeyModal.spec.ts
new file mode 100644
index 00000000..98b5dede
--- /dev/null
+++ b/frontend/src/components/keys/__tests__/UseKeyModal.spec.ts
@@ -0,0 +1,53 @@
+import { describe, expect, it, vi } from 'vitest'
+import { mount } from '@vue/test-utils'
+import { nextTick } from 'vue'
+
+vi.mock('vue-i18n', () => ({
+ useI18n: () => ({
+ t: (key: string) => key
+ })
+}))
+
+vi.mock('@/composables/useClipboard', () => ({
+ useClipboard: () => ({
+ copyToClipboard: vi.fn().mockResolvedValue(true)
+ })
+}))
+
+import UseKeyModal from '../UseKeyModal.vue'
+
+describe('UseKeyModal', () => {
+ it('renders updated GPT-5.4 mini/nano names in OpenCode config', async () => {
+ const wrapper = mount(UseKeyModal, {
+ props: {
+ show: true,
+ apiKey: 'sk-test',
+ baseUrl: 'https://example.com/v1',
+ platform: 'openai'
+ },
+ global: {
+ stubs: {
+ BaseDialog: {
+ template: '
'
+ },
+ Icon: {
+ template: ''
+ }
+ }
+ }
+ })
+
+ const opencodeTab = wrapper.findAll('button').find((button) =>
+ button.text().includes('keys.useKeyModal.cliTabs.opencode')
+ )
+
+ expect(opencodeTab).toBeDefined()
+ await opencodeTab!.trigger('click')
+ await nextTick()
+
+ const codeBlock = wrapper.find('pre code')
+ expect(codeBlock.exists()).toBe(true)
+ expect(codeBlock.text()).toContain('"name": "GPT-5.4 Mini"')
+ expect(codeBlock.text()).toContain('"name": "GPT-5.4 Nano"')
+ })
+})
diff --git a/frontend/src/composables/__tests__/useModelWhitelist.spec.ts b/frontend/src/composables/__tests__/useModelWhitelist.spec.ts
index b4308a63..4061be4d 100644
--- a/frontend/src/composables/__tests__/useModelWhitelist.spec.ts
+++ b/frontend/src/composables/__tests__/useModelWhitelist.spec.ts
@@ -11,6 +11,8 @@ describe('useModelWhitelist', () => {
const models = getModelsByPlatform('openai')
expect(models).toContain('gpt-5.4')
+ expect(models).toContain('gpt-5.4-mini')
+ expect(models).toContain('gpt-5.4-nano')
expect(models).toContain('gpt-5.4-2026-03-05')
})
@@ -52,4 +54,13 @@ describe('useModelWhitelist', () => {
'gpt-5.4-2026-03-05': 'gpt-5.4-2026-03-05'
})
})
+
+ it('whitelist keeps GPT-5.4 mini and nano exact mappings', () => {
+ const mapping = buildModelMappingObject('whitelist', ['gpt-5.4-mini', 'gpt-5.4-nano'], [])
+
+ expect(mapping).toEqual({
+ 'gpt-5.4-mini': 'gpt-5.4-mini',
+ 'gpt-5.4-nano': 'gpt-5.4-nano'
+ })
+ })
})
diff --git a/frontend/src/composables/useModelWhitelist.ts b/frontend/src/composables/useModelWhitelist.ts
index 0ff288bb..9e7cb036 100644
--- a/frontend/src/composables/useModelWhitelist.ts
+++ b/frontend/src/composables/useModelWhitelist.ts
@@ -25,7 +25,7 @@ const openaiModels = [
'gpt-5.2', 'gpt-5.2-2025-12-11', 'gpt-5.2-chat-latest',
'gpt-5.2-codex', 'gpt-5.2-pro', 'gpt-5.2-pro-2025-12-11',
// GPT-5.4 系列
- 'gpt-5.4', 'gpt-5.4-2026-03-05',
+ 'gpt-5.4', 'gpt-5.4-mini', 'gpt-5.4-nano', 'gpt-5.4-2026-03-05',
// GPT-5.3 系列
'gpt-5.3-codex', 'gpt-5.3-codex-spark',
'chatgpt-4o-latest',