AI Text Detector

AI Detector is a free, browser-based tool for checking whether a piece of writing was produced by a person or generated by a large language model such as ChatGPT, Claude, Gemini, Copilot or DeepSeek.

Text is pasted into the editor, up to 10,000 characters per scan and with no account required. The analysis returns a document-level verdict - likely human, uncertain, possibly AI or likely AI - along with a calibrated confidence score. Instead of reducing a whole document to a single number, it highlights individual sentences, so mixed documents, where a human draft has been partly rewritten or expanded by an AI assistant, can be reviewed passage by passage.

A free REST API is available for EDU teams that want to build detection into their own systems, with a limit of 1,000 requests per day and 10,000 characters per request. Typical uses include academic integrity checks, editorial review, recruitment screening and content moderation.