Anthropic halts Fable 5 and Mythos 5 under export-control directive

TL;DR
Anthropic disabled access to its Fable 5 and Mythos 5 models after a US government export-control directive to restrict their use outside the US, citing a narrow potential jailbreak and ongoing national-security considerations; other Anthropic models remain available and the company plans to provide more details soon.
- Anthropic shuts down Fable, Mythos models following Trump admin. directive Ars Technica
- Anthropic disables access to Fable 5 and Mythos 5 to comply with government directive CNBC
- Anthropic Halts Access to Top AI Models After U.S. Ban on Foreign Use WSJ
- Scoop: Trump admin blocks foreign access to Anthropic's most powerful AI Axios
- Anthropic's Claude Fable 5 and Mythos 5 AI suspended over security fears BBC
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