Anthropic restored global access to Fable 5 after a two-week U.S. government export-control standoff that initially restricted access to its most powerful frontier AI model family. Anthropic said the restrictions were relaxed and that both Fable and its related Mythos 5 model are available again for their respective users. The shift was confirmed by U.S. Commerce Secretary Howard Lutnick, who said the government worked with Anthropic to ensure the model’s “alignment” with U.S. interests. Access had been restricted after the Trump administration cited national security concerns about misuse and “jailbreak” attempts bypassing guardrails. The episode began with a rule that barred foreign nationals from using the models, then broadened into a full suspension of access to prevent the rule from sweeping up foreign employees. The government later allowed Mythos to be released to a select group of more than 100 U.S.-based companies and federal agencies. Anthropic said it will scale up government collaboration and work with firms including Amazon, Microsoft, and Google on a “shared industry framework” to assess vulnerabilities in frontier models—signals that public-private guardrail alignment is becoming a permanent feature of AI governance.