Anthropic outlines global watermarking plan for Claude
π Anthropic announced it will apply invisible watermarking to Claude-generated text worldwide to comply with the EU AI Act. The watermark modifies the model's internal randomness during token selection rather than adding visible markers or hidden characters, producing a statistical signature detectable only with a secret key. Anthropic says watermarking has no practical effect on creativity, readability, token costs, or generation speed, and will be omitted where exact outputs or code correctness are required.