diff --git a/apps/x/packages/core/src/models/repo.ts b/apps/x/packages/core/src/models/repo.ts
index 4643951e..44a9d475 100644
--- a/apps/x/packages/core/src/models/repo.ts
+++ b/apps/x/packages/core/src/models/repo.ts
@@ -14,7 +14,7 @@ const defaultConfig: z.infer<typeof ModelConfig> = {
     provider: {
         flavor: "openai",
     },
-    model: "gpt-4.1",
+    model: "gpt-5.4",
 };
 
 export class FSModelConfigRepo implements IModelConfigRepo {