Anthropic Will Watermark All Claude Output in the EU to Meet AI Act Rules
Anthropic announced Monday it will embed invisible watermarks in text and attach C2PA-signed provenance metadata to files generated by future Claude models released in the European Union. The company framed the move as compliance with the EU AI Act's transparency requirements for general-purpose AI systems. The watermarks will apply worldwide to output from covered models across the Claude Platform (API), Claude chat, Claude Code, Claude Cowork, and Claude Tag, as well as third-party providers

