Update app.py

app.py

@@ -79,9 +79,9 @@ session_token = os.environ.get("SessionToken")
 def generate_caption(object_list_str, api_key, temperature):
     query = f"You are an intelligent image captioner. I will hand you the objects and their position, and you should give me a detailed description for the photo. In this photo we have the following objects\n{object_list_str}"
     llm = OpenAIChat(
-        model_name="gpt-4", openai_api_key=api_key, temperature=temperature
+        model_name="gpt-3.5-turbo", openai_api_key=api_key, temperature=temperature
     )
-    # not gpt-3.5-turbo
+    # not gpt-4 yet!
 
     try:
         caption = llm(query)