Two months after deeming Mythos so powerful that no existing safeguards were sufficient, Anthropic is rolling out its first Mythos-class model — Fable 5 — to the public.
Anthropic is also working on a program to vet access to its new Mythos 5 model.
www.axios.com/2026/06/09/a...
Fable 5 includes safeguards to help protect against hacking and bio-terrorism.