Anthropic has dispatched senior technical staff to Washington to resolve a dispute with the White House that forced its most advanced AI models, Mythos 5 and Fable 5, offline.
June 12, 2026 · Anthropic ⟷ White House
U.S. Export Order Forces Anthropic to Pull Its Newest AI Models Offline
A Commerce Department directive ordered access cut off for foreign nationals — so Anthropic disabled Fable 5 and Mythos 5 for all users the same evening. Senior staff have since flown to D.C. to negotiate a restoration.
5:21pm
ET directive issued — models offline that evening
2
frontier models pulled — Fable 5 & Mythos 5
1M
token context window on both models
Fable 5 vs Claude Opus 4.8 — benchmark scores
Higher is better. The recalled model led across coding and reasoning tests.
Blueprint-Bench 2(spatial)
How the standoff escalated
2026 tensions
Dispute over military / surveillance use of AI models
→
Warning raised
National-security concern flagged; China-linked access cited
→
Models pulled
Unprecedented effective recall of a commercial AI model
Praised as a top coder
Stripe reportedly migrated a 50-million-line Ruby codebase in a single day; Cognition, Hebbia and IMC compressed months of work into days.
Open questions
Anthropic calls it a "misunderstanding" tied to jailbreaking, but the timing of any restoration — and the proper scope of government intervention — remain unresolved.
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