EventPolicyJune 13, 2026
Anthropic suspends Fable 5 and Mythos 5 after export control order
The U.S. government issued an export control order on Fable 5 after discovering a specific jailbreak method. Anthropic disabled both Fable 5 and Mythos 5 pending resolution.
15 sources
U.S. Orders Anthropic to Suspend Fable 5 and Mythos 5 Access for Foreign Nationalsthehackernews.com
What Is Anthropic’s Mythos AI and Why Was It Blocked?bloomberg.com
If you’re wondering what’s happening with Claude Fable 5, here’s the clearest picture we have right...x.com
Fable 5 ban: 4 open models responded before Anthropic could restore accessthenewstack.io
US Cracks Down on Anthropic AI Models Amid Abuse Concernsdarkreading.com
Anthropic cuts off Fable 5 and Mythos 5 access following government ordertheverge.com
US Government Orders Anthropic to Pull Claude Fable, Mythos AI Modelsdecrypt.co
U.S. Government Directs Anthropic to Shut Down Fable 5 and Mythos 5 Models on National Security Groundsanthropic.com
Cybersecurity researchers aren't happy about the guardrails on Anthropic's Fabletechcrunch.com
US gov forced Anthropic to pull Fable 5 because of jailbreakreddit.com