gpt-4-plus and authentication

app.py

@@ -1,7 +1,7 @@
 import gradio as gr
 from openai import OpenAI
 import os
-import os
+import json
 
 api_key = os.getenv("OPENAI_APIKEY")
 client = OpenAI(api_key=api_key)
@@ -18,7 +18,7 @@ def chat(message, history):
     print(f"{history}\n----\n{message}\n----\n{history_openai_format}")
 
     response = client.chat.completions.create(
-        model='gpt-3.5-turbo',
+        model='gpt-4-turbo',
         messages= history_openai_format,
         temperature=1.0,
         stream=True)
@@ -35,4 +35,6 @@ demo = gr.ChatInterface(
     title="Summarization and more",
     multimodal=True)
 
-demo.launch()
+auth=os.environ.get("APP_USERS", "None")
+auth=json.loads(auth)
+demo.launch(auth=auth)