San Francisco, Aug. 12 -- Claude's new models will mark AI-generated content from day one as part of compliance commitments under the European Union AI Act's Article 50(2) Code of Practice on Transparency of AI-Generated Content.

According to the company, the commitment applies to Claude models launched in the EU on or after August 2, 2026, which will support machine-readable marking at launch.

To execute this, two complementary techniques mark the generated and processed content: watermarks embedded directly into text and signed provenance metadata attached to files. The embedded text watermark functions invisibly without altering quality or readability, traveling with the text when copied. For supported file formats such as .svg, .png...