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A aiessaydetector.ai

For students · Pre-submit check

Find out what your teacher's detector will see, before you submit.

If you wrote the essay, you want to know whether a detector will wrongly flag it. If you used AI for part of it, you want to know which parts read as AI so you can rewrite them in your own words.

  • Free, 5 checks per day anonymously, 20/day with a free account
  • Sentence-level highlighting: see which sentences look AI-generated
  • Your essay is deleted after 30 days and never used to train the detector

Check an essay Rewrite guide

About: Check before you submit

There are two reasons students check an essay before submitting it. The first is honest: you wrote the whole thing yourself, but you've heard detectors misfire on formal academic prose, and you want to know whether yours is at risk. The second is also honest in its own way: you used an AI tool somewhere in the draft, for brainstorming, for a rough first pass, for smoothing a paragraph, and you want to make sure the final version reads as your writing.

This page is for both cases. The workflow is the same: paste or upload the essay, read the sentence-level heatmap, decide whether to rewrite anything.

What the score actually means

A high AI-likelihood score does not mean you cheated. It means the sentence patterns in your essay match the patterns the detector associates with AI-generated text. Those patterns are things like low perplexity (the next word is too predictable), low burstiness (sentences are all similar length), and uniform vocabulary. Careful academic prose sometimes scores high for exactly these reasons. That is a known failure mode.

The evidence that matters is the heatmap, not the overall score. If the heatmap lights up on five specific sentences in a 40-sentence essay, that is useful. If it lights up evenly across the whole essay, the detector is likely responding to your natural style, not to AI.

If you wrote the whole essay

If you're confident you wrote every word and the detector is flagging the essay anyway:

  1. Look at which specific sentences are flagged. Are they clustered, or evenly distributed?
  2. If clustered, rewrite just those sentences, break them into varied lengths, use more specific vocabulary, add a concrete detail.
  3. If evenly distributed, the detector is likely misreading your voice. Keep a copy of your draft history (Google Docs version history, or Word track changes), that's your strongest evidence if you're ever asked.
  4. Read /for-students/how-to-appeal so you know the appeal procedure before you need it.

If you used AI for part of it

Your school's policy is the first thing to check (your syllabus, or the course site). If AI is allowed with attribution: add the attribution. If AI is allowed for drafting but not for final prose: the flagged sentences are where you rewrite. Our rewrite guide walks through how to do this without making the essay worse.

If AI is prohibited in your class: the right move is not to sneak it past a detector. The right move is to rewrite those sections in your own voice, or to talk to your teacher. Trying to defeat a detector is a losing game, detectors improve faster than obfuscation techniques do.

Privacy

Your essay is stored for 30 days so you can re-check it, then deleted. We never use submitted essays to train the detector. Full policy on /privacy.

Sentence-level heatmap

The score is one number. The heatmap shows you which sentences contributed to it, that's the actionable signal.

Private

We have no relationship with your school's gradebook, LMS, or detector. Checking your essay here is private.

Free tier

Anonymous users get 5 checks per day. A free account raises that to 20/day. No card required.

Frequently asked questions

Will my teacher see that I checked my essay here?
No. We have no relationship with your school's gradebook, LMS, or detector. Checking your essay here is private.
Do all AI detectors give the same score?
No. Detectors disagree substantially, we've published some of the comparison data on /transparency. A score here is a strong signal that other detectors will see something, but it is not a prediction of the exact score they'll report.
If my essay gets flagged here, should I worry?
Not automatically. Look at the heatmap. Clustered flags suggest specific sentences worth rewriting. Evenly distributed flags suggest the detector is misreading your style, keep your draft history and be ready to have a calm conversation if asked.
How many times can I check an essay?
Anonymous users get 5 checks per day. A free account raises that to 20 per day. Paid plans have higher limits.

Run a check now.

Free, 5 checks per day, no account needed.

Check an essay