Update app.py

app.py

@@ -11,7 +11,7 @@ app = Flask(__name__)
 openai_api_key = os.environ.get("OPENAI_API_KEY")
 llm = ChatOpenAI(
     temperature=0,
-    model_name="gpt-4o-mini",
+    model_name="gpt-3.5-turbo",
     openai_api_key=openai_api_key
 )