Anthropic and the US government have agreed to resolve their standoff over access to the cutting-edge "Mythos 5" model. The government will lift export restrictions on the model and permit access for more than 100 trusted institutions inside the US.
June 26, 2026 · Anthropic × US Commerce Dept.
First Export Control on a Large Language Model May Soon Be Lifted
A US directive barred foreign nationals — even Anthropic's own employees — from accessing its top-tier Fable 5 and Mythos 5 models. Anthropic shut both off worldwide to comply. Now both sides are seeking a deal to restore access.
3 days
Models were public (June 9) before the directive landed (June 12)
2 models
Fable 5 & Mythos 5 disabled for all users; other Claude models unaffected
1st ever
First time export controls applied to an LLM
SWE-Bench Pro — Fable 5 led the field
Coding benchmark score (%), drawn to scale
Pricing · Fable 5
$10 / M input
$50 / M output
Input price under half of Mythos Preview
Hex Analytics
over 90%
+10 points vs Opus — built for long-horizon agentic work
Strong early reception
Stripe "compressed months of engineering into days"
Called "senior research scientist grade" in finance, legal & physics
Mythos 5 used to accelerate drug design & genomics
Friction points
Overly broad guardrails block benign queries
Latency and high cost
Developers frustrated by reverting to alternatives after shutdown
How the standoff unfolded
Directive issued
Commerce bars foreign-national access on national security grounds
→
Models shut off
Anthropic disables both worldwide to comply while contesting it
→
Deal sought
Curbs could be lifted and both models restored
Reported trigger: a "narrow, non-universal jailbreak" of Fable 5's guardrails — at a capability level already achievable with existing models. No details disclosed.
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