Fable: The First Forbidden Model

The US Government has issued export controls on Fable, a weaker version of Anthropic's frontier LLM, Mythos.

Three days are all the time it took for the government to crack down on the first model which came close to achieving RSI (recursive self-improvement) after its public release.

And here’s the crazy part — it wasn’t even the most powerful model Anthropic currently has in its inventory.

Claude Fable, released on June 9, 2026 to the public (The New Stack),…