Free AI text detector with a multi-model check and no signup required
ZeroGPT is a web-based AI text detector. Paste text or upload a document and it returns an estimate of how much of it was machine-generated, along with a per-sentence breakdown, word counts and readability figures. A multi-model mode runs several detection methods and reports a combined verdict, and it accepts long inputs and file uploads without an account. The important caveat belongs here rather than in a footnote: AI detectors are probabilistic. They produce false positives, often on non-native English and formulaic prose, and false negatives on lightly edited machine text, so a score should never be treated as proof of authorship.
Last updated: 2026-09-20. This site only provides an index; for exact features, pricing, and licensing, see the official website.
quick ai-text checks, reviewing submissions and spotting suspicious passages
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No AI detector is reliable enough to act on alone. Scores shift with topic and editing, false positives hit non-native English writers hardest, and lightly edited machine text often passes. Treat results as one weak signal alongside drafts and version history.
No. Detection output is not proof, and acting on it can harm people unfairly. In academic or workplace settings, follow the institution's process and look for corroborating evidence such as drafts, version history or a conversation about the work.
Basic detection is free and needs no account, with limits on how much you can check and how often. Higher volumes, the API and companion tools sit behind paid plans, so check the current page if you plan to scan regularly.
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