June 27, 2026

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

Black cables and wires connected to the back of modular LED display panels
Kier in Sight Archives / Unsplash

The US government has cleared Anthropic to restore access to Mythos 5, its most powerful cybersecurity model, for a select group of trusted partners. Commerce Secretary Howard Lutnick wrote in a letter to Anthropic co-founder Tom Brown that the compa...