Did AI Write It? LogoDid AI Write It?
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Did AI Write It?
Paste it below to find out.

Get an AI-detection score for any draft in seconds, down to the exact sentence, with the reasoning behind every flag.

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How it works

Analyze

Paste your text

Drop in an email, essay, or report. Text or a file, either works.

We check it

Every sentence gets scanned for the patterns AI writing leaves behind.

0
Reads human

Get your results

See your score and exactly which lines got flagged, with the reasoning behind each one.

Most detectors are a black box. We show ours.

Detectors do not just say yes or no. They flag measurable patterns. We surface the same four, so you can see exactly why a draft reads machine-made, whether it is yours or someone else's.

Burstiness

Humans vary sentence length without thinking. Models flatten it. Detectors weight this signal hardest.

Rhythm

Runs of same-length sentences read machine-made. We flag every one and show you where.

Vocabulary

Delve, seamless, robust, a testament to. The stock words that scream generative AI.

Punctuation

Em-dash pileups and stacked rule-of-three lists are among the loudest tells.

One paste, three checks.

Most detectors stop at a single score. Every report here also checks the same text for plagiarism and unsupported claims, without opening a second tool.

  • AI detection

    A real, Winston-verified score for every sentence.

  • Plagiarism

    Matched sources and highlighted overlap, inline.

  • Fact-check

    Claim-by-claim verdicts with sources, not just a score.

See how we compare

GPTZero and Originality.ai each do one thing well. Here is how they stack up against a detector that checks all three.

Questions

How does the AI detector work?+

Paste or upload any text and it is scanned sentence by sentence for the patterns AI writing leaves behind: flattened sentence rhythm, stock vocabulary, and predictable structure. You get a 0 to 100 score plus the reasoning behind every flagged line.

How accurate is the AI detection score?+

No detector, ours included, is 100 percent certain on every input. Treat the score as a strong signal to investigate further, not a verdict on its own, especially on shorter drafts.

What should I use this for?+

Checking any draft you are not sure about before it goes out: marketing copy, LinkedIn posts, newsletters, reports, and other professional writing. Not built for catching homework.

What happens if I go over my word limit?+

The free check on this page caps out at 300 words per scan with a limited number of free scans per day. Sign up for a higher monthly word allowance and the full sentence-by-sentence report.

Do I need to install anything?+

No. Paste or upload text right in the browser and get a score in seconds. No account needed for a quick check.

Try it on the draft you are least sure about.

Paste it in and see the score in seconds. No card required to start.

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