The mainstream media continues to sleep on the most important story in the world.
The Once And Future Fable #2
On Friday evening the United States Government has forced Anthropic to take down all access to Fable and Mythos.
Anthropic’s Mythos 5 is back
Anthropic’s Mythos 5 model, the subject of weekslong negotiations with the Trump administration, is back in action. No word yet on Fable 5.
Claude Fable 5 and Mythos 5: Capabilities
Only three days after the release of Claude Fable 5, Anthropic was forced by the United States Government to make it unavailable, when a jailbreak was brought to its attention, rather than the previous situation of ‘yes obviously experts can jailbreak anything if they care enough’ and ‘yes obviously you can ask Fable to fix your code.’
Anthropic’s long-sidelined Fable 5 is greenlit to return
After Mythos 5’s conditional return, Anthropic’s Fable 5 is back too.
Reports of code's death are greatly exaggerated
A sufficiently detailed spec is code begins with this lovely comic:
Anthropic on Twitter / X
Claude Fable 5 will be available again globally tomorrow.After a series of productive conversations with the US government, we're redeploying the model with a new set of classifiers to target and block more cybersecurity tasks. In the near term, some routine tasks like coding…— Anthropic (@AnthropicAI) July 1, 2026
Anthropic releases Claude Fable, a version of Mythos, days after warning AI is becoming too dangerous
Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in high-risk areas like cybersecurity and biology.
Three Labs With a Plan and A Memorandum
The big story today is the release of Claude Fable 5, the version of Claude Mythos that Anthropic believes they can safely distribute to the people.
#784: The absurdity of the apocalypse
Plus: repayment avoidance, the death of “hello,” and a Cinderella story for the algorithmic era
Sung Kim (@sungkim.bsky.social)
I like this quote on code review: "The idea that humans will reliably look through code to find the increasingly rare issues that automated tools miss seems like a fantasy." By Marc Brooker, AWS.
Claude Fable 5 and Claude Mythos 5
Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
Anthropic on Twitter / X
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.The net effect of…— Anthropic (@AnthropicAI) June 13, 2026
Claude Fable 5 and new safety fables
One step further into the power politics of frontier AI systems.
