Anthropic kills Fable 5 and Mythos 5 access over secret US national security order
anthropic shut down access to fable 5 and mythos 5 models for all customers globally following a vague government order citing national security, signaling escalating federal control over advanced ai deployment.
anthropic has fully suspended access to its fable 5 and mythos 5 models globally for both foreign nationals and us customers in response to a government order issued on friday evening citing national security concerns. despite complying with the directive, anthropic criticized the government for failing to provide written details of the threat, noting that the disclosed vulnerabilities were minor jailbreaks with no 'mythos-specific uplift' and are reproducible on other models like openai's gpt 5.5. the company detailed its prior cooperation with us and uk governments to track malicious usage, arguing the move contradicts its existing safety data retention policies. this incident marks a significant escalation in state intervention, where vague security concerns can result in the complete removal of commercial ai capabilities.