Anthropic’s two 5.1 configurations share model weights but not safeguards. Fable 5.1 is the broadly available option with effort and cache controls; Mythos 5.1 is reserved for vetted organizations and trusted research programs.
Knowledge base software for teams
Text-to-speech with 500+ voices in 100 languages
Pick up to 3 — we tailor the catalog. Change anytime.
