- Sources: primary, discussion
- Summary: Anthropic's support article describes how it plans to put its EU AI Act Article 50(2) Code of Practice commitments into practice, and is written as forward commitments rather than as shipped behavior. It states that models launched in the EU on or after 2026-08-02 will support marking, that generated text will carry embedded watermarks, and that marking will apply worldwide rather than only in the EU. The products it lists as covered are the Claude Platform API, Claude, Claude Code, Claude Cowork, and Claude Tag, including access through AWS, Google Cloud, and Microsoft Foundry.
- Why it matters: Once the marking is in place, text a supported model generates carries an embedded mark wherever it is used, including output that passes through an application before reaching a reader.
- Follow-up: When marking is actually enabled per product, and whether the mark survives editing or reformatting.
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