Private by design
Free AI Detector & AI Checker
Check text for AI-like writing from ChatGPT, Gemini, Claude and other AI tools. Get a clear AI-pattern score and sentence-level highlights—free, private and without signing up.
How it works
Paste or open
Add text directly, or open a .txt or .docx file locally.
Analyze privately
A browser-based classifier scores overlapping passages of your text.
Review highlights
See only the passages with strong AI-like signals.
Built for careful decisions
Questions, answered honestly
Is my text stored?
No. Your text is processed locally in your browser and is not sent to our servers.
How accurate is it?
No AI detector is consistently accurate across every kind of writing. The main model handles modern and casual AI writing better than older detectors, but results are still estimates and can be wrong in both directions. On phones, tablets and low-memory devices the smaller Compact model is suggested by default (you can still choose Full); it catches older, formulaic AI writing much more reliably than modern, natural-sounding AI writing.
Why was my human writing flagged?
Formal, academic, technical, repetitive, or highly polished writing can resemble patterns learned by the classifier. A flag is not proof of AI use.
Does it work on short text?
Texts under 80 words are not checked. Texts of 80–149 words are labelled limited evidence, because the classifier has fewer language patterns to evaluate.
Can it be fooled?
Yes. Editing, paraphrasing, casual style, and other changes can reduce detection. We do not recommend treating any result as a guarantee.
Check your writing without sharing it
No account, no upload, and no claim that a score is proof.