Experts Say There’s Now an Open Source AI Model as Scary as Mythos
Futurism
Read full postThe US government temporarily halted Anthropic's Mythos 5 and Fable 5 AI models over security concerns but later allowed limited access. Meanwhile, Beijing's Z.ai released GLM-5.2, an open-weight AI model capable of similar cybersecurity tasks, raising new risks.

- Anthropic’s long-sidelined Fable 5 is greenlit to return· 3 sources
- The Trump Administration Is Lifting Its Export Controls on Anthropic’s Mythos and Fable AI Models· 2 sources
- US clears Anthropic to restore Mythos 5 to a small group of cyber defenders, but Fable 5 stays dark· The Next Web
- Trump Admin releases Anthropic Mythos to be used by more than 100 US companies, agencies· TechCrunch



