Topic

#Mythos 5

2 articles on Mythos 5 — news, releases, guides and analysis from the DevClubHouse engine.

US Government Forces Anthropic to Pull Fable 5 and Mythos 5

A Commerce Department export-control order yanked Anthropic's two most powerful models worldwide — over a jailbreak the company calls minor and already public.

Rachel Goldstein

Claude Fable 5: Anthropic ships its Mythos-class frontier model — deliberately handicapped

Fable 5 and Mythos 5 are literally the same model. The difference is a set of safety classifiers that quietly swap you down to Opus 4.8 when a request strays into offensive security or dual-use biology — and the benchmark asterisks show exactly where the governor bites.

News · 5d ago5