Update app.py

app.py

@@ -41,7 +41,7 @@ def respond(message, person, chat_history):
     #                                   #stop_sequences to not generate the user answer
     # acc_text = ""
     response = openai.ChatCompletion.create(
-        model="gpt-3.5-turbo",
+        model="gpt-4-1106-preview",
         messages= prompt,
         temperature=0.5,
         max_tokens=1000,