Anthropic shuts down Fable, Mythos models following Trump admin directive
Ars reports Anthropic is taking Claude Fable 5 and Mythos offline following a US Commerce Department finding that the Fable 5 jailbreak constitutes a national-security threat.
Why it matters
- First involuntary shutdown of US frontier models by federal order — sets a hard regulatory precedent.
- Converts the 'voluntary framework' EO from last week into a de-facto mandatory regime overnight.
- Disrupts every product built on Fable/Mythos APIs — procurement teams will be scrambling.
- Hands OpenAI, Google, and DeepSeek a clear and immediate competitive opening.