WrittenCheck: AI Detector

Is this text written by AI? Paste it, scan it or open a file, and AI Detector shows you in seconds. You get a clear AI-likeness score, a likely range and every sentence marked, so you can see which parts read like AI and which read like a person wrote them. AI Detector is a free AI checker and AI text detector from the team behind writtencheck.com. No account, no sign-up and no paywall. WHAT YOU GET WITH EVERY CHECK • AI-likeness score from 0 to 100%, with a likely range and a confidence level • Sentence-by-sentence highlights: likely AI, mixed or likely human • Signal breakdown and "what moved the score", so the result is never a black box • Word count and detected language CHECK TEXT YOUR WAY • Paste or type any text from 40 to 3,000 words • Open TXT, DOCX and PDF files • Scan a printed page with your camera • Share text straight from other apps into AI Detector WORKS IN 16 LANGUAGES English, Spanish, Portuguese, French, German, Italian, Russian, Japanese, Korean, Chinese, Arabic, Hindi, Indonesian, Turkish, Thai and Urdu. The app finds the language for you, or you can pick it yourself. BUILT FOR STUDENTS, TEACHERS AND WRITERS • Students: check an essay before you hand it in • Teachers: get a second opinion on an assignment, then look at the marked sentences before you decide anything • Writers, editors and marketers: check articles, blog posts, emails and reports • Anyone who wants to know if a text came from ChatGPT, Gemini, Claude, another AI writing tool or a person PRIVATE BY DESIGN Your text is checked and then thrown away. It is never stored on our server and never used to train the detector. Your history stays on your phone only, and you can turn it off or clear it at any time. FREE TO USE You get 200 free checks every day. The counter on the home screen shows how many are left, and it resets at midnight UTC. TELL US WHEN A RESULT LOOKS WRONG Tap "Wrong?" on any result to send us a report. Our team reads every report and replies by email. Your text is only included if you tick the box to share it. A FAIR NOTE ON AI DETECTION No AI detector is 100% accurate, and this one isn't either. A score is an estimate of writing patterns, not proof of who wrote a text. Use it as one signal, read the highlighted sentences, and never punish anyone on a score alone. POWERED BY WRITTENCHECK.COM AI Detector is powered by writtencheck.com. Every check uses the WrittenCheck API, which belongs to and is run by WrittenCheck website. ChatGPT, Gemini and Claude are trademarks of their owners. AI Detector is not affiliated with or endorsed by them. Questions or feedback? Write to [email protected].