The US government has moved to effectively control the release of frontier AI models. Both Anthropic and OpenAI now face the same government review process, shifting the focus from rivalry between the two companies to a broader regulatory question.
June 12, 2026 · Export-Control Order
Washington Pulls the Plug on Anthropic's Most Powerful AI
Citing national security, the US Commerce Department ordered Anthropic to cut foreign-national access to Fable 5 and Mythos 5. Anthropic complied by disabling the models abruptly for all customers worldwide — and the fight has shifted from Anthropic vs. OpenAI to the whole industry vs. regulation.
3 days
From Fable 5's public release to its global shutdown
1 prompt
A single jailbreak triggered a worldwide service halt
100%
Of customers cut off — including those inside the US
How the jailbreak became a shutdown
Bypass found
Researchers break Fable 5's guardrails
→
Flagged
Reported to senior officials as a warning
→
Emergency order
Non-public halt, no details disclosed
→
Global cutoff
API disabled for every customer
Two labs, two fates under review
Fable 5 / Mythos 5
Anthropic
Status: Access halted for all customersMethod: Immediate, non-public orderRelease: Suspended
GPT 5.6
OpenAI
Status: Limited previewMethod: Customer-by-customer approvalRelease: Undetermined
Critics & defenders push back
Dozens of cybersecurity professionals condemn the move for stripping defenders of the best models, citing market uncertainty, a risk to US AI leadership, and a process that lacks transparency.
The case for caution
Others accept the national-security concern is real — but argue cloud-only APIs leave the whole industry fragile, fueling demand for locally runnable models.
Government pre-approval of model releases is suddenly realistic.
Driven by AI-powered cyberattack and defense, biorisk, and alignment concerns — and with models offered mainly via cloud APIs that can't be run locally — the impact reaches as far as data-center investment.
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