Update app.py

app.py

@@ -6,7 +6,7 @@ import openai
 openai.api_key = os.getenv("OPENAI_API_KEY")
 
 def chat_with_gpt(input_text):
-    model_engine = "gpt-3.5-turbo" # Choose the appropriate model engine.
+    model_engine = "text-davinci-002" # Choose the appropriate model engine.
     prompt = f"{input_text} (AI):"
 
     response = openai.Completion.create(