app.py

import gradio as gr
from huggingface_hub import InferenceClient

def respond(message, history, system_message, max_tokens, temperature, top_p, hf_token):
    # Inicializa os 3 clientes
    client_main = InferenceClient(token=hf_token, model="meta-llama/Llama-3.1-8B-Instruct")
    client_aux1 = InferenceClient(token=hf_token, model="google/flan-t5-large")
    client_aux2 = InferenceClient(token=hf_token, model="facebook/bart-large-cnn")

    # Histórico e system message
    messages = [{"role": "system", "content": system_message}]
    messages.extend(history)
    messages.append({"role": "user", "content": message})

    # Passo 1: Llama 3.1
    response_main = client_main.text_generation(inputs=message, max_tokens=max_tokens)

    # Passo 2: Aux1
    response_aux1 = client_aux1.text_generation(inputs=response_main, max_new_tokens=max_tokens)

    # Passo 3: Aux2
    response_aux2 = client_aux2.text_generation(inputs=response_aux1, max_new_tokens=max_tokens)

    return response_aux2

# Interface Gradio
chatbot = gr.ChatInterface(
    fn=respond,
    additional_inputs=[
        gr.Textbox(value="You are a friendly Chatbot.", label="System message"),
        gr.Slider(1, 2048, 512, label="Max new tokens"),
        gr.Slider(0.1, 4.0, 0.7, label="Temperature"),
        gr.Slider(0.1, 1.0, 0.95, label="Top-p (nucleus sampling)"),
    ],
)

with gr.Blocks() as demo:
    chatbot.render()

if __name__ == "__main__":
    demo.launch()