We built an AI-text humanizer that uses no AI. Zero network calls.

Every "humanizer" we tried for our own content was another LLM behind an API: you send your text away and get a new set of AI tells back.

So TextHumanize is plain algorithms. No model, no API key, the library runs fully offline, and the same seed gives the same result every time. It now works in 25 languages, as an open-source library, a web app and a free browser extension.

The hard part turned out not to be rewriting sentences. It was knowing which ones to leave alone.

What's the first thing that gives away AI writing for you?