Why Did the Smartest AI in the World Just Go Dark?
Two of the most powerful large language models in the world just got yanked from service, starting with a national security directive from the United States government during the Friday night news dump.
"The U.S. 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," Anthropic said in a statement.
"The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance."
Double emphasis in the original — and, I'd have to add, some claim not all their customers. But stick a pin in that thought for just a moment.
Although the administration failed to give any specific details, Anthropic says it believes the government became aware of a method of "jailbreaking" Fable 5, potentially unleashing the AI from its built-in guardrails against use in developing cyber exploits, deadly chemical synthesis, and other sensitive topics.
That's a big deal. The "Fives" are the latest version of Claude, Anthropic's enterprise- and government-centric LLM. Fable is the "safe" version available to the public, while you might think of Mythos as the weapons-grade version. Because it is.

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