🪦 Dead, then revived
Claude Fable 5 & Mythos 5 (June Suspension)
Product killed · Government Order (Reversed) · shut down June 12, 2026
- Born
- Died
- Lifespan
- 3d
- Cause of death
- Government Order (Reversed)
- Killed by
- U.S. Government
- Type
- Model
Anthropic's most powerful model ever — a 'Mythos-class' tier above Opus that scored 10%+ higher than Opus 4.8. Launched June 9, killed June 12 when the U.S. Commerce Department issued a national-security export directive barring use by any foreign national anywhere — including Anthropic's own staff. The only way to comply was to shut it off for everyone. Dead for 19 days until Commerce lifted the controls on June 30; Fable 5 returned globally on July 1 with a new jailbreak classifier. A rare resurrection — killed by government order, then un-killed.
Collateral damage: Developers who integrated Fable 5 during its 3-day launch window lost access for 19 days with no warning. On its return, bundled access was capped then moved to metered credits on July 7.