Gradioblocks.py

with gr.Blocks() as demo:
    
    radio = gr.Radio(value='gpt-3.5-turbo', choices=['gpt-3.5-turbo','gpt-4'], label='models')
    chatbot = gr.Chatbot(value=[], elem_id="chatbot").style(height=650)
    with gr.Row():
        with gr.Column(scale=0.90):
            txt = gr.Textbox(
                show_label=False,
                placeholder="Enter text and press enter",
            ).style(container=False) 
        with gr.Column(scale=0.10):
            cost_view = gr.Textbox(label='usage in $',value=0)

    txt.submit(add_text, [chatbot, txt], [chatbot, txt], queue=False).then(
            generate_response, inputs =[chatbot,],outputs = chatbot,).then(
            calc_cost, outputs=cost_view)
            
demo.queue()