Anthropic will embed imperceptible watermarks in text generated by Claude models launched on or after 2 August 2026, and attach signed C2PA provenance metadata to generated image files. The marking applies worldwide, well beyond the European Union that requires it. Models released before that date are still being retrofitted.

All CollectionsPrivacy and legalHow Claude marks AI-generated content Updated todayAnthropic has signed the EU AI Act's Article 50(2) Code of Practice on Transparency of…

This move is part of the company's effort to comply with the EU regulation and transparency requirements for AI.

EU rules cited as reason for effort to trace AI output ancestry