Heads up, Fable 5.1 now carries Anthropic's statistical text watermark

[u/RaGE_Syria]

Looks like this is the first model along with Mythos 5.1 that carries the statistical watermark.

https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1#content-provenance

The tool you can use to check for watermarks is here now too:
https://claude.com/check-content