Update app.py

change openai model,
add share=True

app.py

@@ -10,7 +10,7 @@ openai.api_key = os.getenv("OPENAI_API_KEY")
 def chatbot(text):
     # Call the OpenAI API to generate a response
     response = openai.Completion.create(
-        engine="davinci",
+        model="text-davinci-003",
         prompt=text,
         max_tokens=1024,
         n=1,
@@ -25,4 +25,4 @@ def chatbot(text):
 iface = gr.Interface(fn=chatbot, inputs="text", outputs="text", title="GPT-3 Chatbot")
 
 # Launch the interface
-iface.launch()
+iface.launch(share=True)