Detecting-AI.com is built around a simple premise: an AI score alone is not useful, so the tool shows exactly which passages triggered it. You paste text or upload a TXT, PDF or DOCX file, choose to run the scan, and receive an overall percentage alongside in-place highlights through the original document. The site is explicit that this is a probabilistic signal rather than proof of authorship, and it repeatedly warns reviewers to weigh drafts, sources and context before drawing conclusions — a noticeably more cautious posture than many competing detectors.
Beyond detection, the platform bundles a set of related writing tools: an AI humanizer with monthly word allowances, a plagiarism checker with credit-based scanning, a fact checker and essay-focused tools for checking and grading student writing. Paid plans scale both the size of documents and the allowances, with the top Scholar tier aimed at dissertations and theses and advertising unlimited humanizer words with document scans up to one million characters.
For developers, a REST endpoint returns sentence-level labels plus an AI percentage, and a remote MCP server exposes the same detector to AI assistants. The pages are available in multiple languages including French, Dutch, Russian, German, Portuguese, Spanish and Arabic, and password-free scans are offered without an account.