Fable 5

Pierluigi Paganini June 22, 2026
Anthropic’s Mythos AI broke into almost all NSA classified systems in hours

Senate testimony claims Anthropic’s Mythos AI breached NSA and Cyber Command systems in hours, prompting a U.S.-ordered shutdown. On June 12, the Trump administration directed Anthropic to restrict access to Fable 5 and Mythos 5, its two most capable models, exclusively to US citizens. Because verifying every user’s nationality in real time isn’t practically possible, […]

Pierluigi Paganini June 13, 2026
Washington Pulled the Plug on Anthropic ‘s Fable 5 and Mythos 5 models. The Rest of the World Is Watching.

Anthropic disputes restrictions on Mythos 5 and Fable 5, arguing the decision lacks transparency and isn’t based on clear technical evidence. On Friday June 12 at 5:21pm ET, Anthropic received a letter from the US Commerce Department, signed by Commerce Secretary Howard Lutnick and drafted with officials from the Bureau of Industry and Security. The […]