Free AI Content Detector
Paste any text to estimate whether it was written by a human or an AI model like ChatGPT. Runs entirely in your browser — your text is never sent anywhere.
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Frequently asked questions
How accurate is this AI detector?
This tool uses heuristic analysis of writing patterns — sentence consistency, vocabulary diversity, passive voice, and known AI phrases. It is a helpful indicator but not a definitive judgment. Accuracy is typically 70–85% on clearly AI-generated or clearly human text.
What signals does the AI detector analyze?
The tool checks burstiness (sentence length variation), type-token ratio (vocabulary diversity), passive voice frequency, transition word overuse, and a library of phrases commonly produced by large language models like ChatGPT.
Can AI detection be fooled?
Yes. Lightly edited AI text, paraphrased content, or very short texts can fool any detector. No tool — including commercial ones — can reliably detect AI text in all cases. Use this as one signal among many.
Is my text stored anywhere?
No. Analysis runs entirely in your browser using JavaScript. Your text is never sent to any server and is not stored anywhere.