Breaking

US Commerce Dept. Tells Anthropic to Cut Foreign Access to Two Newest Models

June 17, 2026 at 11:26 EDT

Policy & Regulation
Foundation Models
Security

The US Commerce Department issued an export-control directive to Anthropic on June 12, 2026, citing national security and requiring that access to its latest "Claude Fable 5" and "Claude Mythos 5" models be cut off for foreign persons inside and outside the United States. Anthropic complied by immediately disabling access to both models for all customers.

June 12, 2026 · Anthropic

US Orders Anthropic to Cut Foreign Access to Its Frontier Models

A Commerce Department export-control directive targeting "Fable 5" and "Mythos 5" led Anthropic to disable both models for all users worldwide — unable to reliably filter access by nationality, it shut everything off to ensure compliance.

Frontier models pulled offline (Fable 5, Mythos 5)

100%

Of users blocked — including domestic developers & enterprise customers

Token context window (128k max output)

Coding benchmark — SWE-Bench Pro

Fable 5 posts an +11 point jump over the prior Opus 4.8 generation — judged to match a "human senior engineer."

Opus 4.8

69.3%

→

Fable 5

80.3%

CursorBench: 72.9% · Price (in / out): $10 / $50 per 1M tokens

Why the shutdown

A jailbreak risk triggered a precedent-setting move

Trigger
A Fable 5 jailbreak demo broke its safety guardrails — shared with the government and judged a national-security risk.

Scope
Export curbs now reach AI models themselves — not just chips — covering foreign nationals and Anthropic's own foreign staff.

Stakes
Could set a precedent for government pre-review of frontier AI; EU & UK seek a carve-out for their users.

Government view

Keep advanced AI from flowing to adversaries such as China; administration says it is open to further talks with Anthropic.

Industry pushback

Critics call the action "disproportionate"; cybersecurity executives urge easing it, warning similar rules could stall frontier AI progress.

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