The US Commerce Department has mandated Anthropic to suspend global exports of its Mythos and Fable AI models due to concerns that these technologies could be misused by military intelligence in countries like China and Russia. This decision follows the launch of Anthropic’s latest AI systems, Fable 5 and Mythos 5, in June 2026. In compliance with the export controls, which restrict access to foreign nationals, Anthropic has disabled these models for all users worldwide, including its own employees.

Fable: Fable, or Claude Fable 5, is Anthropic’s advanced AI model designed for broader safe deployment with robust guardrails while matching Mythos base capabilities. It launched publicly for enterprise users days prior to the restrictions. Global access has been suspended to meet the Commerce Department compliance requirements.
Mythos: Mythos, specifically Claude Mythos 5, is Anthropic’s advanced AI model with heightened capabilities for specialized uses such as cybersecurity and featuring relaxed safeguards. It was released for select trusted users shortly before the ban. The model is now inaccessible globally due to the US export control order.
Anthropic: Anthropic develops frontier AI systems with an emphasis on safety and reliability, including the Claude series. It launched Fable 5 and Mythos 5 as its most capable models in early June before the export suspension order. The company is complying with the Commerce Department directive while stating disagreement and seeking clarification.
US Commerce Department: The US Commerce Department administers export controls and national security regulations on sensitive technologies. It recently issued a directive to Anthropic suspending access to advanced AI models for foreign nationals over diversion risks. The action aligns with efforts to protect US technological advantages in strategic sectors.

Model Launch: Anthropic released Fable 5 and Mythos 5 in June 2026 as its newest frontier AI systems before the suspension.
Export Controls: The US Commerce Department applied national security export rules to bar foreign nationals from accessing Anthropic’s latest AI models.
Compliance Impact: Anthropic disabled the models for all users worldwide after receiving the directive covering foreign nationals including its own staff.