diff --git a/mcp/openai_client.go b/mcp/openai_client.go
index afc58878..03e535b5 100644
--- a/mcp/openai_client.go
+++ b/mcp/openai_client.go
@@ -7,7 +7,7 @@ import (
 const (
 	ProviderOpenAI       = "openai"
 	DefaultOpenAIBaseURL = "https://api.openai.com/v1"
-	DefaultOpenAIModel   = "gpt-5.2"
+	DefaultOpenAIModel   = "gpt-5.4"
 )
 
 type OpenAIClient struct {