the us government just told Anthropic to cut off its two most powerful models from every foreign national on earth, inside or outside america. Anthropic couldn't cleanly separate foreigners from americans, so it pulled fable 5 and mythos 5 for everyone. So this week anthropic shipped fable 5 and mythos 5, both built on the same base. mythos is the heavy one. it's so good at finding software security holes that anthropic kept it locked to a small set of trusted partners. that cyber skill is exa...