Is this text written by AI?
Paste any block of writing. We run five forensic signals and show you what each one sees — no black-box scores, no upload required. Detection runs entirely in your browser.
Type or paste at least 20 characters.
Analysis runs locally in your browser. Nothing is sent.
What this tool does
Five heuristic signals — burstiness, lexical tics, n-gram repetition, sentence-start variety, punctuation patterns — combined into a single ensemble verdict. Each signal is shown so you can audit the call.
What it can't do
No detector is reliable on short text (< 200 words) or heavily-edited AI output. Treat the verdict as evidence, not proof. False positives happen — never use this to accuse anyone.
Want to learn more?
Read How to Spot AI-Written Text for nine practical tells with examples.