Fable 5 Lasted 3 Days. One 5:21pm Letter Shut It Down
The US government used an export control directive to force Anthropic to shut down Fable 5 and Mythos 5 on June 12, three days after launch. The claimed jailbreak, per Anthropic: asking the model to fix software bugs. Two days earlier, Anthropic had publicly asked for exactly this kind of government power.