switched to GPT4

app.py

@@ -33,7 +33,7 @@ Respond using Markdown.
     history_openai_format.append({"role": "user", "content": message})
 
     response = openai.ChatCompletion.create(
-        model="gpt-3.5-turbo",
+        model="gpt-4",
         messages=history_openai_format,
         temperature=0.2,
         stream=True,