Update app2.py

app2.py

@@ -79,7 +79,7 @@ def chatbot(input):
         messages.append({"role": "user", "content": input})
         chat = openai.ChatCompletion.create(
             #model="gpt-3.5-turbo", messages=messages
-            model="gpt-4o", messages=messages
+            model="gpt-4", messages=messages
         )
         reply = chat.choices[0].message.content
         messages.append({"role": "assistant", "content": reply})