Claude will watermark AI-generated content
Anthropic says supported Claude models will add imperceptible watermarks to generated text. The watermark is part of the text itself, so it can travel with copied text and can even survive some editing.
For supported images and other files, Claude will attach signed C2PA provenance metadata instead. Anthropic says detection tools and technical details are still to come, and these marks are signals rather than perfect proof of origin.
This is similar to Google's SynthID, which embeds imperceptible watermarks in AI-generated text, images, audio, and video.