On August 2, Article 50 of the EU AI Act became enforceable, and Anthropic's answer has already shipped. Every Claude model launched on or after that date embeds an imperceptible watermark directly into generated text, and the watermark stays with it when the text is copied and pasted somewhere else. Generated files (.svg, .png, .jpg) carry signed provenance metadata under the C2PA open standard. The marking applies everywhere you use Claude, from the API to Claude Code to Cowork, worldwide. Continue Reading →