20 August 2026
Claude watermark removed within hours of rollout
First reported
Prompt Engineering Daily and Wired ran this on , all on the same day.
- Anthropic added invisible watermarks to Claude text to comply with EU rules requiring AI-generated content be machine-detectable, with fines up to 3% of annual revenue for non-compliance.
- Developer Guillaume Meyer published code removing the watermarks within four hours, gaining 20,000 bookmarks on X and over 100 contributors adapting it for their own projects.
How it was covered
Reported by Wired