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How Claude marks AI-generated content

  • How Claude marks AI-generated content

    New developments are afoot, thanks to the EU AI Act:

    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. ....

    1. Embedded watermarks in text

    When a supported Claude model generates text, it weaves an imperceptible watermark directly into the text itself. You won’t see it, and it doesn’t change the meaning, quality, or readability of Claude’s response.

    Because the watermark is part of the text, it will travel with the text when it’s copied and pasted elsewhere, and may persist through some editing. Watermarking will be applied at the model level, which means it will be present no matter which Claude product or surface the text comes from.

    TBH, I'd be quite happy with visible, perceptible watermarks as well... to put it in Claudeish; it's not about secrecy — it's about clarity and transparency. the watermark is load-bearing!

    Tags: claude writing ai eu ai-act transparency text watermarks