Claude: Fable 5.1 and Mythos 5.1

Introducing Claude Fable 5.1 and Claude Mythos 5.1 — AI models designers can actually ship with

Claude Fable 5.1 and Claude Mythos 5.1 push coding, research, and knowledge work further than previous releases — and they open a clearer path for how AI may support serious scientific progress next.

They share the same core model, with different safeguard levels. Fable 5.1 is broadly available for everyday product and design workflows. Mythos 5.1 stays inside trusted access programs, with protections tuned for high-stakes domains like cybersecurity and the life sciences.

For UI/UX designers, product designers, and design engineers, Fable 5.1 is the practical upgrade: stronger help across prototyping, design-to-code, UX writing, research synthesis, and handoff — while responding to real customer feedback on pricing, data retention, and safety controls.

Explore the announcement and related AI design tools on Scroll.gallery.