Developer releases free open-source tool to detect AI-written text on your own computer, no internet required

A developer named Ejhfast published fast-ai-detector on GitHub — a command-line tool that runs locally on your machine to identify whether text was generated by an AI language model (like ChatGPT) rather than written by a human.

Unlike web-based detection services, this tool works offline on your computer without uploading text to external servers, making it faster and keeping your content private — useful for teachers checking student submissions or writers verifying their own work.

The tool is free and open-source, meaning anyone can download it, use it, modify it, or audit how it works. Teachers, content moderators, and researchers can now test AI-detection locally without paying per-use fees or trusting third-party services with their data.