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.
Provide customer context to AI agents via API or UI
Convert long-form videos into short viral clips
Pick up to 3 — we tailor the catalog. Change anytime.
