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Cybersecurity AI Research

US clears Anthropic to restore Mythos 5 to a small group of cyber defenders, but Fable 5 stays dark

The Next WebPublished Jun 27, 2026

The US government has authorized Anthropic to reinstate its Mythos 5 AI model for use by a limited group of cybersecurity professionals, while its Fable 5 model remains unavailable. This selective clearance reflects ongoing regulatory scrutiny of advanced AI tools in sensitive sectors.

More on this story

Experts Say There’s Now an Open Source AI Model as Scary as Mythos
Jul 7· Futurism
Anthropic’s long-sidelined Fable 5 is greenlit to return
Jul 1· 3 sources
The Trump Administration Is Lifting Its Export Controls on Anthropic’s Mythos and Fable AI Models
Jun 30· 2 sources
Trump Admin releases Anthropic Mythos to be used by more than 100 US companies, agencies
Jun 27· TechCrunch

#anthropic #cybersecurity #fable-5 #mythos-5 #us-government

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