What happened
On 26 June 2026, Commerce Secretary Howard Lutnick sent a letter to Anthropic announcing a partial revision to the export control directive originally imposed on 12 June 2026 under national security authorities. The June 12 directive had required an export licence for Anthropic to distribute its Mythos 5 and Fable 5 models to foreign nationals, causing Anthropic to disable both models globally. Lutnick's June 26 letter determined that 'appropriate safeguards are in place to permit certain trusted partners to access the Claude Mythos 5 Model' and that 'a licence will no longer be required to export, reexport, or in-country transfer' Mythos 5 to an approved list of 100+ US organisations (including Fortune 500 companies, federal agencies, and Project Glasswing critical-infrastructure defenders) and their foreign-national employees. Fable 5 restrictions remain in place. Lutnick explicitly reserved the right to 'reevaluate and adjust the scope of licence requirements...should circumstances change.' Anthropic committed to work with the US government on 'protocols and standards and releases for the Covered Models.' As of 29 June, talks on Fable 5 restoration were reported to be ongoing, with potential resolution expected in early July 2026.
Why it matters
This is the first instance of a US government export control directive forcing a frontier AI lab to globally disable a widely-deployed commercial model, and then partially restoring access under a government-curated trusted-partner framework. It establishes a precedent that the Commerce Department can act as an on/off switch for specific AI model access — including for foreign nationals inside the US — using EAR national security authorities. The partial restoration is conditioned on Anthropic's ongoing cooperation with government on safety protocols, creating a new category of quasi-regulatory engagement. The government-gated framework mirrors the voluntary pre-release review established by Trump's June 2 EO on frontier AI, with both GPT-5.6 and Mythos 5 now subject to Washington sign-off before broad deployment.
Action needed
Organisations seeking Mythos 5 access must confirm they are on Commerce's approved list; non-approved entities still require an export licence. Monitor for Fable 5 restoration announcement (expected early July 2026). All frontier AI labs should review their exposure to similar export control directives under EAR national security authority. Track Anthropic's ongoing protocol/standards commitments to the government, which may shape future industry-wide requirements.