AI Detector

AI Detector is a web-based tool at detector.io that checks whether a passage of text appears to be generated by AI. It analyzes text patterns and returns a clear result, and the site says it can also spot AI content that has been rewritten or blended with human writing. Scanning is fast and the tool is completely free, with a limit of 3,000 characters per scan. It was built as AI-generated content became common and people needed a way to check whether writing still sounded original and natural. Everything runs in the browser, so there is nothing to install before you start.

- Paste text and get a fast read on whether it looks AI-generated

- Check rewritten or human-edited AI content, not just raw output

- Keep individual scans under the 3,000-character limit

- Use results as one input when reviewing drafts or submissions

- Run checks in the browser without installing anything

- Writers and editors reviewing drafts before publication

- Educators and students checking text for originality

- Teams that receive outsourced or AI-assisted copy

Detection is probabilistic. A result is guidance, not proof, and it should not be the sole basis for academic grades, disciplinary action, or accusations, since mistakes can affect real people. The 3,000-character limit means long documents must be split, and splitting can change context. Model accuracy and free access can change over time, and no detector catches every case. Use it as one check among several, including reading the text yourself, and remember that any decision with consequences for someone else deserves more than a single automated score.