6 godz. temu
Anthropic Shuts Off Fable 5 and Mythos 5 Worldwide After U.S. National Security Directive
Anthropic said it has abruptly disabled access to its two most advanced AI models, Fable 5 and Mythos 5, for customers worldwide after receiving a U.S. government directive requiring the company to block "any foreign national" from using the systems on national security grounds.
In a public statement, Anthropic said the order arrived on June 12 at 5:21 p.m. Eastern time and invoked national security authorities. The directive required the company to suspend access for "any foreign national, whether inside or outside the United States," including foreign national Anthropic employees.
Anthropic said it cannot reliably distinguish foreign nationals from other users in real time, leaving it with no practical way to comply selectively. As a result, the company said it shut off Fable 5 and Mythos 5 for everyone. Anthropic added that access to its other models is not affected.
Bloomberg reported that the U.S. Commerce Department acted after another company claimed it had jailbroken Mythos. Anthropic said it had seen only verbal evidence of a narrow technique focused on prompting the model to review a specific codebase and fix software flaws, and argued that such a finding does not justify pulling a commercial product used at scale. "The finding of a narrow potential jailbreak should not be cause for recalling a commercial model deployed to hundreds of millions of people," the company said, calling for any action to proceed through a "statutory process that is transparent, fair, clear, and grounded in technical facts." It added: "This action does not adhere to those principles."
The shutdown is also drawing attention from crypto markets. Onchain traders in 2026 have increasingly used pre-IPO perpetual futures to take leveraged positions on the implied valuations of major private companies without holding equity, and Anthropic is among the most actively wagered names. Bitcoin.com News reported earlier this week that data aggregator Defillama began tracking pre-IPO perpetual markets for Anthropic, OpenAI, SpaceX, and Quantinuum, with 14 such markets now listed as interest in onchain "AI bets" builds.
A regulatory shock that forces Anthropic to switch off its flagship models, even temporarily, is the kind of development that can move sentiment in these pre-IPO perpetual contracts, making the order relevant to traders beyond the AI sector.
More broadly, the directive offers an early test of how far U.S. national security authorities may reach into commercial AI deployment. Washington has tightened export controls on advanced chips and computing power for years; applying similar logic to the models themselves, and to who may use them, would mark a further escalation. The order's scope, covering "any foreign national" including Anthropic's own foreign employees, suggests regulators may be treating frontier AI models as strategic technology.
Anthropic said it will comply with the directive while disputing its rationale and working to restore access. The company framed the suspension as potentially stemming from a misunderstanding rather than a final determination, and stressed that its other models remain available.
For users and developers, the impact is immediate: hundreds of millions of people have lost access to Fable 5 and Mythos 5 at once, including teams building products on top of the models. Next steps depend on whether the government formalizes its concerns through the type of process Anthropic is seeking or lifts the order as quickly as it was imposed. Until then, two of the market's most capable AI systems remain offline worldwide.