June 27, 2026 update on Anthropic model access restrictions. Commerce Secretary Howard Lutnick’s June 26 letter to Tom Brown revises Mythos 5 only — not Fable.
No license required for Mythos export to: (1) Annex A entities and foreign-national employees; (2) Anthropic foreign-national employees; (3) US government civilian agencies.
| Model | June 27 status |
| Mythos 5 | Partial restore — Annex A US orgs, foreign staff, US gov labs |
| Fable 5 | Still banned — June 12 restrictions unchanged |
| Claude Code/API (Fable) | Opus 4.8 fallback for consumers and most developers |
Anthropic restoring Mythos 5 access quickly for critical infrastructure orgs; continuing work to expand Mythos and restore Fable 5 for general use.