Update app.py

app.py

@@ -77,7 +77,7 @@ def add_paragraph_numbering(input_text):
     return numbered_text
 
 def get_completion_from_messages(messages,
-                                 model="gpt-4-1106-preview",
+                                 model="gpt-3.5-turbo-1106",
                                  temperature=0, max_tokens=1000):
     response = openai.ChatCompletion.create(
         model=model,