A market for removing AI watermarks has sprung up days after Anthropic disclosed switching on invisible marks in everything Claude writes, spanning a GitHub project with over 4,500 stars, a cluster of newly registered web tools, and at least one established AI detection evasion service.
None of the claims about defeating the text watermark can currently be checked, though, because Anthropic has not yet published how it works or released the detector that would show whether a cleaned document still carries the mark.
Who is offering what
Among the largest is watermarks-remover, an MIT-licensed tool from software developer Guillaume Meyer, founder of Memo.
It began as a Claude-only agent skill and now advertises coverage of Claude, Gemini and SynthID-Text, OpenAI provenance surfaces, and open-weight models using Kirchenbauer-style marks.
