Fable 5.2 and Mythos 5.2 just dropped:
https://www.anthropic.com/claude-fable-and-mythos-5-2

anthropic.comIntroducing Claude Fable 5.2 and Claude Mythos 5.2Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges. Fable 5.2 sets a new bar in coding, finance, and the sciences.
commit f8a4a1a