Clever AI Detector

Clever AI Detector

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Free online AI text checker — probability scores with sentence-level signals, up to 10,000 words per check, unlimited runs.

Last Updated Nov 10, 2026
Clever AI Detector screenshot

About

Clever AI Detector is a free online tool that estimates the probability a piece of text was generated by AI (ChatGPT, Gemini, Claude, and similar models). Rather than issuing a blunt "AI or human" verdict, it reports an honest probability score and highlights which sentences carry the strongest AI signals, so you can quickly locate suspicious passages. Each check handles up to 10,000 words, registration is not required, runs are unlimited, and detection history is kept for review.

Key Features

**AI probability scoring: ** a calibrated probability estimate instead of a binary judgment.
**Sentence-level signals: ** specific sentences with the strongest AI characteristics are flagged for quick review.
**Long-text support: ** up to 10,000 words per check.
**Unlimited free runs: ** no registration, no per-check quota.
**Detection history: ** past checks are retained for comparison and re-review.
**One-click humanizing: ** when results lean AI, jump straight to the companion Clever AI Humanizer for a free rewrite.

Pricing & Fees

  • Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans.
  • Free access: The AI detector is stated as 100% free with no ads, no paywall, and no sign-up required to run a check.
  • Usage limits: Each check supports texts up to 10,000 words, with unlimited runs.
  • Extra features: Signed-in users get free check history, where their texts are kept; the site also offers an AI Humanizer, AI Paraphraser, Grammar Checker, and an API.

Who It's For

It is for teachers and editors reviewing submissions, content managers screening freelance work, researchers checking text provenance, and writers who want to see which passages read as AI before publishing — plus anyone who wants a second opinion paired with the site's humanizer.

FAQ

Does it give a simple AI/human verdict?No — it gives a probability score with sentence-level evidence, which is more honest about what detection can know.

Is there a length limit?Up to 10,000 words per check.

Is it really free?Yes — unlimited checks, no registration required.

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