A fully functional WhatsApp AI chatbot you can deploy and run yourself. Built with Python (FastAPI) and powered by OpenAI GPT-4o, it turns your WhatsApp number into an intelligent assistant with no monthly SaaS fees. You only pay for API usage.

The bot handles real conversations with context awareness. It replies to text messages, transcribes voice notes, and responds with AI voice replies, analyzes images like photos and screenshots, and summarizes PDF documents.

Built with a clean, production-ready architecture, all prompts are centralized in one file so you can easily customize personality and behavior in minutes.

Key Features

• GPT-4o chat and image understanding

• Whisper voice transcription

• OpenAI TTS voice replies

• Per-user memory system

• PDF summarization

• FastAPI backend

• WhatsApp Cloud API integration

• Fully configurable via .env

Includes

• Full source code

• Setup guide (README + PDF)

• .env example

Requirements

• OpenAI API account

• Meta Developer WhatsApp Cloud API

• Python 3.11+ and server/ngrok

For developers, agencies, and entrepreneurs building AI WhatsApp automation tools.