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.
Create 2D and 3D floor plans and interior layouts
Virtual AI companions with chat and voice
AI assistant supporting multiple major models
Pick up to 3 — we tailor the catalog. Change anytime.
