Anthropic shares more details about how Claude’s new watermarks will work

Anthropic detailed how Claude will add hidden patterns to AI-generated text so outputs can be identified by those with the right detection key. The company says the watermarking will not affect output quality, will use Google DeepMind’s SynthID-Text method, and will be supported by a detection API.

The move shows how AI labs are preparing for regulatory pressure around provenance, especially under the EU AI Act. User backlash highlights the tension between transparency requirements and customers who fear watermarking could expose or limit legitimate AI-assisted work.