How Claude marks AI-generated content | Claude Help Center
Anthropic has signed the EU AI Act's Article 50(2) Code of Practice on Transparency of AI-Generated Content, as a provider of both generative AI models and generative AI systems. This article describes how we’re planning to put those commitments into practice, how marking works, and what its limitations are. We’ll update this article and publish more detailed technical guidance as it becomes available. Anthropic’s commitments under the EU AI Act’s Code of Practice on Transparency of AI-Generated Content What our marking commitments mean for Claude: New models will mark AI-generated content from day one. Claude models launched in the EU on or after August 2, 2026 will support machine-readable marking at launch. Generated text will carry embedded watermarks, and generated files will include digitally signed provenance metadata where supported. Marking works everywhere you use Claude. Marks will apply to output from supported Claude models across Claude Platform (API), Claude, Claude Code
Updated over a week ago Anthropic has signed the EU AI Act's Article 50(2) Code of Practice on Transparency of AI-Generated Content, as a provider of both generative AI models and generative AI systems. This article describes how we’re planning to put those commitments into practice, how marking works, and what its limitations are. We’ll update this article and publish more detailed technical guidance as it becomes available. Machine-readable marks in Claude-generated content As AI-generated content becomes commonplace, greater transparency and signals about where content comes from can…
saved by
related reading
- How Claude's text watermarking worksanthropic.com
- The Mark of the Machinenewyorker.com
- Claude’s Constitution \ Anthropicanthropic.com
- Claude 4.5 Opus' Soul Document — LessWronglesswrong.com
- A Guide to Claude Code 2.0 and getting better at using coding agents – sankalp's blogsankalp.bearblog.dev
- kat (@transkatgirl) on Xx.com
- Detecting AI fingerprints: A guide to watermarking and beyond | Brookingsbrookings.edu
- Wikipedia:Signs of AI writing - Wikipediaen.wikipedia.org
- Best practices for Claude Code - Claude Code Docsanthropic.com
- The Making of Claude Code \ Anthropicanthropic.com
- Clio: Privacy-preserving insights into real-world AI use \ Anthropicanthropic.com
- Introducing Claude Fable 5.1 and Claude Mythos 5.1anthropic.com