- A US export-control directive issued June 12, 2026 forced Anthropic to suspend access to its Fable 5 and Mythos 5 models.
- Unable to filter users by nationality in real time, Anthropic abruptly disabled access for all customers worldwide as of June 13.
- The models had been generally available for just four days, since June 9.
- The order set off alarm across Europe and Canada about who controls the AI the world relies on.
What Happened
Anthropic was ordered to take its two most powerful AI models offline by a US export-control directive, AI News reported. The company said it received the directive to suspend access to Claude Fable 5 and Claude Mythos 5 at 5:21 pm ET on June 12, in a letter from Commerce Secretary Howard Lutnick that did not detail the specific security concern.
Unable to filter users by nationality in real time, Anthropic said it had to “abruptly disable” access for all customers to comply — taking the models offline everywhere as of June 13, briefly including its own foreign-born employees.
Why It Matters
This is the first time a government “off switch” has pulled a frontier model from the entire world at once. It converts an abstract policy fear into a live one and intensifies the US-China and US-allies tension already visible in China’s $295 billion AI buildout and recent US enforcement against AI-enabled foreign operations.
Technical Details
The two models had been generally available only since June 9, the public face of a class developed under controlled access since April through a program called Project Glasswing. Fable 5 was described as a Mythos-class model made safe for general use, state-of-the-art on nearly all tested benchmarks — the same model that recently topped the Artificial Analysis Intelligence Index. The more capable Mythos 5 had stayed restricted to Glasswing partners and selected biology researchers.
Who’s Affected
Every Anthropic customer lost access to the two models simultaneously. Foreign governments — the reaction was loudest in Europe and Canada — now treat reliance on US-controlled frontier AI as a sovereignty risk, accelerating calls for domestic alternatives. Enterprises building on Fable 5 face sudden continuity questions.
What’s Next
Anthropic has not said when or whether access will be restored, and the directive’s specific rationale remains undisclosed. The broader consequence is a sovereignty scramble: expect Europe and Canada to push harder for AI they control, the same logic now driving state-backed buildouts elsewhere.
