Anthropic's Fable 5 and Mythos 5 come back online as Commerce lifts export controls
Anthropic said it received notice on June 30 that the Commerce Department's Bureau of Industry and Security had withdrawn the June 12 export controls that forced it to disable its two most capable models worldwide, because the order barred access by foreign nationals including its own non-citizen staff.
Fable 5 returned globally on July 1 across the Claude Platform, Claude.ai, Claude Code and Claude Cowork, included for up to 50% of weekly usage limits through July 7 before moving to usage credits, with AWS, Google Cloud and Microsoft Foundry re-enablement to follow. Anthropic said a newly trained classifier blocks the reported bypass technique — found by Amazon researchers — in more than 99% of cases, and that blocked requests fall back to Opus 4.8, which it acknowledged will raise false positives on ordinary coding and debugging work. Commerce Secretary Howard Lutnick's letter stated a license is no longer required for export, reexport or in-country transfer of either model.

WHY IT MATTERS
The first time US export-control authority was used against a commercially deployed frontier model rather than hardware. For agent builders it means a hardened front-door model, a documented fallback path, and a new precedent every lab now has to price in.
