American Government Takes Down Claude Fable
Zvi's AI Roundups · Zvi Mowshowitz · 2026-06-13
The US Department of Commerce issued export controls on Anthropic's Fable 5 and Mythos 5 AI models — forcing a complete global shutdown — after Amazon identified a jailbreak, with Zvi Mowshowitz arguing the government's implementation was deeply misguided regardless of the underlying security concern.
Appears in
Extraction
Topics: ai-export-controlsai-regulationai-safety-policyanthropicjailbreaking
Claims
- The US Commerce Department classified Fable 5 and Mythos 5 under export controls, citing a jailbreak found by Amazon, cutting off access for all foreign nationals including Anthropic employees.
- Anthropic contends the identified jailbreaks were minor, non-universal, and provided no meaningful capability uplift beyond what existing publicly available models already offer.
- Because Anthropic has no mechanism to verify citizenship, the export control order forced a complete shutdown of both models for all customers worldwide.
- David Sacks framed the administration's position as a request to patch a specific jailbreak, suggesting the controls could be lifted quickly if Anthropic complied.
- Zvi argues the implementation sets a dangerous and impossible standard — 'no jailbreaks ever' — that would halt all frontier model deployments industry-wide if applied consistently, and reflects either malice or profound misunderstanding of how LLM security works.
Key quotes
We have not even received a disclosure of a concerning non-universal potential jailbreak that led to a harmful result. The potential jailbreaks that have been disclosed to us are either entirely benign responses or are minor findings that provide no Mythos-specific uplift.
If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers.
If we drive all foreign talent out of our AI labs, and otherwise actually go down the current road, that is one of the few things that could put China and other competitors back in the game in earnest, both slowing us down and speeding them up.