app.py

import os
import gradio as gr
import whisper
from openai import OpenAI

# OpenRouter client
client = OpenAI(
    api_key=os.getenv("OPENROUTER_API_KEY"),
    base_url="https://openrouter.ai/api/v1"
)

# Load Whisper model
speech_model = whisper.load_model("tiny")

# Voice assistant function
def voice_assistant(audio):

    if audio is None:
        return "Please record audio first."

    try:
        # Convert speech to text
        result = speech_model.transcribe(audio)

        user_text = result["text"]

        # AI response from OpenRouter
        completion = client.chat.completions.create(
            model="openai/gpt-oss-20b:free",
            messages=[
                {
                    "role": "user",
                    "content": user_text
                }
            ]
        )

        ai_reply = completion.choices[0].message.content

        return f"You said: {user_text}\n\nAI: {ai_reply}"

    except Exception as e:
        return f"Error: {str(e)}"

# Gradio UI
interface = gr.Interface(
    fn=voice_assistant,
    inputs=gr.Audio(
        sources=["microphone"],
        type="filepath"
    ),
    outputs="text",
    title="AI Voice Assistant",
    description="Speak and get AI responses"
)

interface.launch()