Update app.py

app.py

@@ -243,7 +243,7 @@ model = HfApiModel(
 model = OpenAIServerModel(
     max_tokens=2096,
     temperature=0.5,
-    model_id="gpt-4o",
+    model_id="gpt-4o-mini",
     api_key= api_key,
     custom_role_conversions=None,
 )