Text marks

Claude AI text watermark

A Claude AI text watermark is not a visible logo. It is an imperceptible, machine-readable signal woven into generated words so detectors can later estimate whether Claude processed the text.

Why it survives copy and paste

Because the mark is part of the wording itself, copying Claude output into Docs, Notion, email, or code comments can carry the signal with it. Light edits may not be enough to erase it.

How a Claude watermark remover fights it

Statistical marks break when the surface form changes enough—especially via meaning-preserving paraphrase. Our Claude watermark remover regenerates phrasing with a non-Claude model so the original token fingerprint is disrupted.