anthropic's claude fable 5 returned online after being removed june 12 under a u.s. export-control directive, described by one analyst as a deliberately capability-stripped or 'lobotomized' model. separately anthropic shipped fable 5 and mythos 5 as the same underlying model split only by a safety wall, with mythos restricted to vetted security and infrastructure firms. government hands are now directly shaping which model capabilities exist publicly.