AI Detector
Paste any text below to see how likely it was written by AI. Free, no signup, with sentence-by-sentence highlighting and a shareable report. Scores are a probability estimate, not proof — use them as one signal, not a verdict.
FAQ
How accurate is AI detection?
No detector is definitive. Results are probabilistic and can misjudge formulaic human writing and lightly edited AI text. Treat the score as one signal, never as proof.
Can I check multiple files at once?
Yes — switch to "Batch files" and drop any number of .txt or .md files, or a .zip containing them. Each file gets its own score. Batch scanning happens entirely in your browser, so nothing is uploaded and there's no daily limit.
Is my text stored?
Detection itself stores nothing. Text is saved for 7 days only if you click "Create share link", and only you get that link. Batch files never leave your device at all.
Flagged as AI? Try the AI Humanizer. Also see word counter.