Signal

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

First reported by Pcworld · 5m ago

The signal ●●●○ Compiled by AI from Pcworld and Techmeme

What happened

Aside from being more powerful than their predecessors, Claude Fable 5.1 and Mythos 5.1 will add invisible watermarks all their text and file outputs.

AI-written summary. May contain errors.

AI Policy

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

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