About Zyrstar

Zyrstar builds writing tools centered on transparency. Our AI Humanizer and AI Detection Engine are developed entirely in-house — no third-party AI-detection APIs, no black-box scores. Every metric we show you is one we can explain.

We believe people should be able to see exactly why a piece of text scores the way it does, whether they're a student, a content team, or a solo writer trying to make AI assistance sound like themselves.