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AI Content Detector

Paste a passage for a quick, browser-based estimate of how AI-generated it reads — a gut-check before you publish, not a verdict.

4.6 (9,140) 100% free No signup Runs in your browser

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Paste text to estimate AI-likelihood

    Estimate only. No detector can prove authorship — treat this as a gut-check, never as evidence.

    About this tool

    What is the AI Content Detector?

    The AI Content Detector gives a rough, instant read on how machine-written a passage looks. It scores signals that often differ between human and AI drafts: sentence-length variety (humans tend to mix long and short — "burstiness"), tell-tale AI transition phrases, repetition, and vocabulary diversity. It combines those into a single AI-likelihood estimate with a plain-English label.

    Important: no detector — including this one — can prove who or what wrote something. AI detection is inherently probabilistic and produces false positives on polished human writing and false negatives on lightly-edited AI. Treat the result as a prompt to re-read and add your own voice, not as evidence. It runs entirely in your browser, so nothing you paste is stored.

    Why use it

    Built to win the click, not just the ranking

    Burstiness signal

    Measures sentence-length variation — uniform pacing reads more machine-like.

    Cliché-phrase scan

    Flags over-used AI transitions ("moreover", "it's important to note", "delve").

    Honest estimate

    A clear likelihood band with a built-in "not definitive" disclaimer.

    How it works

    A few clicks to a better result

    1

    Paste your passage

    Add at least a few sentences for a meaningful read.

    2

    See the estimate

    Get an AI-likelihood percentage, a label, and the signals behind it.

    3

    Edit for a human voice

    Vary sentence length, cut clichés and add specifics, then re-check.

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    FAQ

    Questions, answered

    No. AI detection is probabilistic and error-prone in both directions. Use this as a gut-check to improve a draft, never as proof or to penalise anyone.
    Very uniform, formal or formulaic human writing can trip the same signals as AI. Mixing sentence length and adding specific, personal detail usually lowers the score.
    No. The analysis runs locally in your browser and nothing is stored.