Update app.py

app.py

@@ -11,7 +11,7 @@ os.environ["OPENAI_API_KEY"] = api_key
 
 # Initialize LLM
 llm = ChatOpenAI(
-    model_name="gpt-4o-mini",   # Not "gpt-4o-mini", valid model names are "gpt-4o", "gpt-4-turbo", "gpt-3.5-turbo"
+    model_name="gpt-3.5-turbo",   # Not "gpt-4o-mini", valid model names are "gpt-4o", "gpt-4-turbo", "gpt-3.5-turbo"
     temperature=0,
     openai_api_key=os.getenv("OPENAI_API_KEY")
 )