Anthropic's senior technical staff met with White House officials in Washington, D.C. on June 15 to discuss restoring access to its new "Claude Mythos 5" and "Claude Fable 5" models, which were halted under a U.S. Commerce Department export control directive. The company is continuing talks toward restoration while contesting the government's concerns. 1
June 12, 2026 · Frontier AI Governance
Anthropic Pulls Two Frontier Models Worldwide After U.S. Export Order
A Department of Commerce export-control directive forced Anthropic to cut off access to Claude Fable 5 and Claude Mythos 5 for all users globally. The company calls it "a misunderstanding" and is meeting senior officials to restore access.
2
frontier models disabled — Fable 5 & Mythos 5
10,000+
high/critical vulnerabilities found via Project Glasswing
1st
comprehensive export-control order on LLM access
30-day
data retention for safety monitoring
From Order to Global Shutdown
How a single directive cascaded across every platform.
Jun 12 — Order
Commerce cites cyber capability & jailbreak risk; bars all "foreign persons."
→
Comply
Anthropic disables both models for all users worldwide — including its own staff.
→
Jun 15 — Talks
Meeting with senior U.S. officials to seek a path to restore access.
Platforms affected: Anthropic API · AWS Bedrock · Google Cloud Vertex AI
The Two Models
Same base model — different safeguards and reach.
Claude Mythos 5
Unveiled Apr 2026 · Mythos 5 Jun 9
State-of-the-art cyber, biology & healthcare. Project Glasswing access only — never publicly released.
Reference price: $10 in / $50 out per 1M tokens
Claude Fable 5
Released around Jun 9, 2026
Same base model with robust safeguards. Routes cyber & biology queries to Opus 4.8. More broadly available.
Defensive Upside
Mozilla found & fixed 271 bugs in Firefox
Identified a memory-corruption flaw tied to Apple's M5 chip
Major leaps in zero-day discovery & proof-of-concept creation
Concerns Raised
Automated zero-day exploitation risk
Dual-use across civilian & military applications
Why restrict private access while government uses the model?
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