AITurnitin estimates how likely an English essay was written by AI and highlights the sentences that read most like it. Then polish the flagged sentences: we rewrite only those, keep citations and numbers exactly as you wrote them, and show our detector's verdict before and after.
See which lines look AI-written, not just one score
Rewrites only flagged sentences; undo any change
Text deleted after 24 hours, never trains a model
The site speaks your language; it checks English text
Paste the full body of your paper, or drop a .docx or .pdf. 1,500+ words is most reliable; the minimum is 50. New accounts get 5,000 free credits, enough to check 5,000 words.
Get one of three verdicts — likely human, uncertain, likely AI — plus highlights on the sentences that read most like AI. Under 500 words, any result is preliminary.
Rewrite the flagged sentences, undo any change you don't want, export to .docx and compare the verdict before and after.
Two models trained to separate human and AI writing score the whole document, calibrated on academic English, and highlight the sentences that read most like AI.
Only the sentences our detector flags are rewritten; the rest stays as you wrote it. A rewrite is kept only if it reads naturally and our detector scores the text lower, and citations, numbers and abbreviations stay exactly as written.
No AI detector is proof. We tune ours to wrongly flag human writing as rarely as possible, and we publish how we tested it.
Read the full evaluation →AI detection runs on a model we host on our own servers. Your text is never sent to a third-party detection service.
Detection runs entirely on our servers — no outside detector ever sees your essay.
Your writing is never used to train any model, ours or anyone else's.
Texts and results are deleted automatically. Delete them sooner with one click.
No. It is a statistical estimate. Human writing is sometimes flagged, and AI writing is sometimes missed. Use it as a signal to review your draft, not as evidence.
Your text is deleted from our servers within 24 hours, and you can delete it sooner. It is never used to train any model.
Detection and polishing work on English text. The website itself is available in 17 languages so you can read every result in your own.
No. Every revised sentence is checked: citations, numbers and abbreviations must match the original exactly, or the sentence is kept as you wrote it.
Check your next essay: 5,000 free credits, enough to check 5,000 words.