AI Detector for Essays
Check any essay for AI-generated writing with sentence-level precision. Whether you teach, edit, or write, CheckAI shows which lines read as ChatGPT — and lets you revise them before submission.
To check an essay for AI writing, paste it into CheckAI and run detection — you get a sentence-level map of which lines read as AI, not just one contested percentage. It is free for students and educators with 20 checks daily, and you can revise flagged lines before submitting.
How to check an essay for AI in 3 steps
Paste or upload the essay
Add the full essay text. CheckAI handles long documents and scores the whole piece at once.
Review the sentence-level highlights
See which specific sentences read as AI-written, so the result is concrete rather than a single contested percentage.
Revise, or document the evidence
Writers can rewrite flagged sentences inline and re-check until it reads like their own voice. Reviewers get line-by-line evidence to work from.
Built for how essays are actually reviewed
Concrete, line-by-line evidence — for students self-checking and educators reviewing alike.
Sentence-level highlights
See which sentences drive the AI score, so feedback is specific instead of a single number that is easy to argue with.
For students and educators
Students can self-check AI-assisted drafts before submitting; educators and editors can review work with concrete evidence.
Revise without leaving the page
If it is your own draft, rewrite flagged sentences inline and re-run detection until the essay sounds like you.
Private and secure
Essays are never stored or used for training.
How to check an essay for AI writing
Paste the full essay into CheckAI and run detection. Rather than a single overall figure, you get a sentence-by-sentence map of where the writing reads as AI-generated. That makes it easy to see whether the whole essay was generated, or just a paraphrased paragraph or two — and gives writers a clear, targeted revision list instead of a vague warning.
AI detection and academic integrity
AI detection is a signal, not a verdict. Every detector can produce false positives, and an honest workflow treats a flag as a starting point for a conversation, not proof on its own. CheckAI is designed around that reality: the sentence-level evidence helps reviewers see how strong a flag actually is, and helps students understand which parts of their writing read as machine-generated.
For students who write with AI
If you use AI to brainstorm or draft, CheckAI lets you check your essay before you hand it in — and, more usefully, learn to rewrite the flagged parts in your own voice. Over time that builds the kind of authentic writing that no detector flags, because it genuinely is yours.
AI essay detector FAQ
How accurate is AI detection for essays?+
No detector is perfectly accurate, and false positives happen. CheckAI focuses on showing sentence-level evidence so a flag can be examined rather than taken as a final verdict.
Can teachers use this to check student work?+
Yes — as a signal backed by line-by-line evidence, not as sole proof. The sentence-level view helps distinguish strong flags from weak ones and supports a fair review.
Is this the same as Turnitin?+
Turnitin is primarily a plagiarism checker that also offers AI detection. CheckAI focuses specifically on token-level AI detection and lets you revise flagged writing in the same editor, so the two can be complementary.
Is it free for students?+
Yes. Every account gets 20 free credits daily with no credit card required.
Will my essay be stored?+
No. Essays are never stored or used for training.
Check your essay before you submit
Sentence-level AI detection for essays, free to start. 20 credits daily, no card required.
Check an Essay Free