Update app.py

app.py

@@ -26,7 +26,7 @@ def invoke_openai(prompt):
     sys_prompt = "You are a helpful assistant that always answers questions."
     # query text-davinci-003
     res = client.chat.completions.create(
-        model='gpt-3.5-turbo-0613',
+        model='gpt-3.5-turbo',
         messages=[
             {"role": "system", "content": sys_prompt},
             {"role": "user", "content": prompt}