Anthropic the other day announced future models "launched in the EU" will include watermarking https://support.claude.com/en/articles/16266773-how-claude-marks-

Anthropic the other day announced future models "launched in the EU" will include watermarking https://support.claude.com/en/articles/16266773-how-claude-marks-ai-generated-content https://support.claude.com/en/articles/16266773-how-claude-m... I was assuming it was something like SynthID rather than just sneaky invisible unicode but it's hard to tell from the description.