the real and only unchatgpt
Claude Watermark Remover
Remove Claude watermark from AI text. A full rewrite strips the invisible Claude text mark. Paste Claude output and humanize it.
Works with your favourite AI tools:
How to remove Claude watermark in 3 steps
The mark is in word choice, not hidden unicode. Rewrite the whole draft, then copy it out.
Paste Claude text
Drop in output from Claude.ai, Claude Code, or the API. Light edits can keep the mark.
Rewrite every sentence
The Claude watermark lives in word choice. A full rewrite picks new words, so the old pattern is gone.
Copy the new text
Use the rewritten draft. Hidden-character cleaners do not remove this mark.
What is the Claude watermark?
Claude does not add hidden characters. New models change which next word they pick, so Anthropic can later score whether Claude wrote some of the text.
How does Claude watermark work?
It nudges sampling when the model has a real word choice. Exact code tokens often skip that nudge. Prose carries more of the mark than code.
How to remove Claude watermark?
Rewrite the text so Claude no longer chose the words. Paste it in the form above. Stripping zero-width spaces does not remove this mark.
Does Claude watermark text after a light edit?
Often yes. Proofreading leaves most of the original word pattern. A complete rewrite is what removes it.
Does Claude watermark code?
Less than prose. Comments can still carry it. Do not treat this tool as a code-strip utility.
Can I detect Claude watermark without Anthropic?
No public text checker exists. Anthropic keeps the Detection API private. Their file checker only reads C2PA metadata on images and media, not prose.
When did Claude watermark start?
Models that launched on or after 2 August 2026 mark text from day one. Older models get the EU delay until 2 December 2026.
Is there a Claude watermark remover on GitHub?
Unicode cleaners on GitHub only strip invisible characters. That is not the Anthropic mark. This page rewrites the text instead.
Need ChatGPT humanized too?
Same tool, broader copy on the UnchatGPT home page.