Claude Fable 5.1 and Mythos 5.1 are Anthropic's first models to watermark text outputs; a detection API is available to eligible groups as required under EU law (Ben Patterson/PCWorld)
Anthropic is putting text watermarking into Claude for the first time.
Claude Fable 5.1 and Mythos 5.1 will mark generated text outputs, according to Techmeme's note. Anthropic is also offering a detection API, but only to eligible groups. The note says the access is tied to requirements under EU law.
Claude Fable 5.1 and Mythos 5.1 will mark generated text outputs, according to Techmeme's note. Anthropic is also offering a detection API, but only to eligible groups. The note says the access is tied to requirements under EU law.
score 6