Update app.py

app.py

@@ -34,7 +34,7 @@ def chatbot(input, conversation_history=[]):
         
         try:
             # Generate a response using OpenAI's GPT model
-            chat = client.chat.completions.create(model="gpt-3.5-turbo", messages=messages)
+            chat = client.chat.completions.create(model="gpt-4o-mini", messages=messages)
             reply = chat.choices[0].message.content
         except Exception as e:
             # Handle errors gracefully