app.py

import gradio as gr
from huggingface_hub import InferenceClient

client = InferenceClient("Qwen/Qwen2.5-72B-instruct")

def respond(message, history):
    messages = [{"role": "system", "content": "You are a friendly chatbot"}]

    if history:
        messages.extend(history)

    messages.append({"role": "user", "content": message})

    response = client.chat_completion(
        messages,
        max_tokens=100,
        temperature=0.2
    )

    return response["choices"][0]["message"]["content"].strip()

chatbot = gr.ChatInterface(respond, type="messages")
chatbot.launch()