Free AI Detector

Is this text AI-generated?

Paste anything and get an instant read on how AI it looks — scored by perplexity and burstiness, the same signals the big detectors use. Free, no login.

0 words
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Questions

How does the AI detector work?
It measures two things AI detectors rely on: perplexity (how predictable your word choices are) and burstiness (how much your sentence length and structure vary). AI writing tends to be low on both; human writing is higher.
Is it free?
Yes — paste text and check it, no login required. Create a free hashtag.org account to rewrite AI text to read human, run plagiarism checks, and keep your history.
Is my text stored?
No. Text you paste is scored in the moment and not saved.
How accurate is it?
No detector is perfect — treat the score as a strong signal, not a verdict. Short passages (under ~50 words) are unreliable, so paste a full paragraph or more.
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