Fable 5 goes public
Anthropic releases Claude Fable 5, the first public model in its Mythos-class family. Mythos 5 itself stays restricted to vetted partners.
SOURCE >> ANTHROPIC
A dated, sourced record of the directive that suspended Anthropic's Claude Fable 5 and Mythos 5 worldwide. Each entry is deep-linkable. New rows are appended as the situation moves.
Anthropic releases Claude Fable 5, the first public model in its Mythos-class family. Mythos 5 itself stays restricted to vetted partners.
A jailbreaker, "Pliny the Liberator", claims to have liberated Fable 5 and posts what they describe as its leaked system prompt. Anthropic disputes that this is a real jailbreak.
Commerce Secretary Howard Lutnick sends Anthropic CEO Dario Amodei an export-control directive barring access to Fable 5 and Mythos 5 by any foreign national, inside or outside the US, including Anthropic's own staff.
Unable to separate foreign nationals from its user base in real time, Anthropic disables both models for everyone worldwide and asks AWS to revoke Bedrock access for all users.
Anthropic's status page reads: "We've suspended access to Claude Mythos 5 and Claude Fable 5." It calls the order a misunderstanding, says it is working to restore access, and gives no ETA.