telegram_with_chat_gpt.py

from telegram import Update
from telegram.ext import ApplicationBuilder, MessageHandler, filters, ContextTypes
from openai import OpenAI


Specify your keys
OPENAI_API_KEY = "sk-..."  
TELEGRAM_TOKEN = "123456789:ABC..."

client = OpenAI(api_key=OPENAI_API_KEY)

async def handle_message(update: Update, context: ContextTypes.DEFAULT_TYPE):
    user_text = update.message.text

    response = client.chat.completions.create(
        model="gpt-4o-mini",
        messages=[{"role": "user", "content": user_text}]
    )

    await update.message.reply_text(response.choices[0].message.content)

app = ApplicationBuilder().token(TELEGRAM_TOKEN).build()
app.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, handle_message))
app.run_polling()