diff --git a/dto/openai_request.go b/dto/openai_request.go
index a6567542..aa4f1962 100644
--- a/dto/openai_request.go
+++ b/dto/openai_request.go
@@ -55,6 +55,7 @@ type GeneralOpenAIRequest struct {
 	EnableThinking      any               `json:"enable_thinking,omitempty"` // ali
 	THINKING            json.RawMessage   `json:"thinking,omitempty"`        // doubao
 	ExtraBody           json.RawMessage   `json:"extra_body,omitempty"`
+	SearchParameters    any               `json:"search_parameters,omitempty"` //xai
 	WebSearchOptions    *WebSearchOptions `json:"web_search_options,omitempty"`
 	// OpenRouter Params
 	Usage     json.RawMessage `json:"usage,omitempty"`
diff --git a/relay/channel/xai/adaptor.go b/relay/channel/xai/adaptor.go
index b5896415..17747dd5 100644
--- a/relay/channel/xai/adaptor.go
+++ b/relay/channel/xai/adaptor.go
@@ -56,6 +56,15 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	if strings.HasSuffix(info.UpstreamModelName, "-search") {
+		info.UpstreamModelName = strings.TrimSuffix(info.UpstreamModelName, "-search")
+		request.Model = info.UpstreamModelName
+		toMap := request.ToMap()
+		toMap["search_parameters"] = map[string]any{
+			"mode": "on",
+		}
+		return toMap, nil
+	}
 	if strings.HasPrefix(request.Model, "grok-3-mini") {
 		if request.MaxCompletionTokens == 0 && request.MaxTokens != 0 {
 			request.MaxCompletionTokens = request.MaxTokens
diff --git a/relay/channel/xai/constants.go b/relay/channel/xai/constants.go
index 685fe3bb..311b4bb6 100644
--- a/relay/channel/xai/constants.go
+++ b/relay/channel/xai/constants.go
@@ -1,6 +1,8 @@
 package xai
 
 var ModelList = []string{
+	// grok-4
+	"grok-4", "grok-4-0709", "grok-4-0709-search",
 	// grok-3
 	"grok-3-beta", "grok-3-mini-beta",
 	// grok-3 mini