Update app.py

app.py

@@ -10,7 +10,7 @@ def openai_chat(messages, user_input):
     messages.append({"role": "user", "content": user_input})
     
     response = openai.ChatCompletion.create(
-        model="gpt-4o",  # or use "gpt-3.5-turbo"
+        model="gpt-3.5-turbo",  
         messages=messages
     )
     
@@ -24,7 +24,7 @@ def openai_chat(messages, user_input):
     return chat_history, messages
 
 # Creating Gradio UI
-with gr.Blocks() as demo:
+with gr.Blocks(theme="Hev832/niceandsimple") as demo:
     gr.Markdown("### OpenAI Chatbot with Gradio Chatbox")
     
     chatbot = gr.Chatbot(label="Chat History")