Free AI detector
Find out how AI-like your text reads, which sentences give it away, and why — then fix them in one click.
About the AI checker
How accurate is this AI detector?
No AI detector is fully reliable, including this one. Treat the score as a signal to review the highlighted sentences, not as proof. Human writing — especially by non-native English speakers — is sometimes flagged, and edited AI text is sometimes missed.
What does the detector look for?
Even sentence rhythm, stock AI phrases, generic wording with few specifics, rule-of-three patterns and tidy summary endings. It also measures rhythm variation and counts common AI phrases, and shows you each signal.
Is my text stored?
No. Your text is sent to the AI model only to run the check, and Twin doesn't save it. See the privacy page for details.
Make it sound like you
Rewrite flagged text in your own voice with the Twin AI humanizer.