Update app.py

app.py

@@ -55,7 +55,7 @@ Balance confidence with caution to ensure the safety and reliability of the comp
 # Initialize components with updated classes
 llm = ChatOpenAI(
     openai_api_key=API_KEY,
-    model_name="gpt-4",
+    model_name="gpt-4o-mini",
     temperature=0,
 )