What happened
Anthropic PBC disabled access to its Mythos 5 and Fable 5 AI models. This followed an unprecedented US government order from the Trump administration's Commerce Department, mandating suspension of access for all foreign nationals due to national security concerns. The order, received Friday at 5:21 p.m. New York time, cited a "jailbreak" vulnerability in Fable 5, reportedly identified by Amazon.com Inc. researchers. Anthropic complied by shutting off access to all customers globally.
Why it matters
This action establishes a new precedent for US government intervention in frontier AI model deployment. Procurement teams and platform engineers globally now face the risk of abrupt, widespread shutdowns of advanced AI models due to national security export controls. The mechanism involves direct export control directives on AI models, a significant shift from previous restrictions on hardware like semiconductors. This follows Anthropic's earlier designation as a US supply-chain risk by the Pentagon, highlighting escalating government oversight of AI capabilities.
