Free AI Detector
Paste any text to see how likely it is to be flagged as AI-generated, and exactly which patterns trigger it. No signup, and no limit on the instant check, which runs in your browser. The optional deep scan has a daily allowance and sends your text to our AI provider (Anthropic) for a one-time analysis that we don't store.
What this detector checks
Most AI detectors hand you a single “human or AI” verdict and hide their reasoning. This one shows the full breakdown. It analyzes your text against 40 patterns that distinguish machine-written from human writing — including perplexity (how predictable word choices are), burstiness (variation in sentence length and rhythm), vocabulary diversity, AI-favored phrasing, and structural uniformity. Each triggered pattern is listed so you know precisely what to fix.
From detection to natural writing
Spotting the patterns is half the battle. When your text scores high, our free AI humanizer rewrites it to reduce those exact signals while preserving your meaning. For how detectors score text and why they flag human writing, read how AI detection works.
Frequently asked questions
Is this AI detector free?
Yes, it's completely free with no signup. The instant check runs in your browser with no limit; the optional AI deep scan has a daily allowance.
How accurate is it?
It scores text against 40 linguistic and statistical patterns associated with AI writing — the same kinds of signals detectors like GPTZero and Turnitin use, such as predictability, burstiness, and vocabulary diversity. No detector is perfect, ours included: treat the score as an estimate, not a verdict, and run the deep scan for a second opinion.
Does my text get stored?
No. The instant check runs in your browser, so your text stays on your device. The optional deep scan sends your text to our AI provider (Anthropic) for a one-time analysis; we don't store it. If you ask us to email your report, it contains your scores and fix list, never your text.
What's the difference between detecting and humanizing?
Detection scores your text and shows which AI patterns are present. Humanizing rewrites the text to reduce those patterns. You can humanize flagged text for free on our humanizer page.
Will passing this detector mean I pass GPTZero or Turnitin?
Not necessarily. It looks for the same kinds of signals, but every detector is trained and weighted differently, and they update often. Use it to find the patterns most likely to get your text flagged, not as a guarantee.
Humanize flagged text for free
Found AI patterns? Rewrite your text so it reads naturally, then check it again — no credit card required.
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