Why the Government Just Killed Claude Fable 5

TL;DR

• 1

  A government directive appears to have killed Fable 5 almost immediately: Anthropic says it received a 5:21 Eastern legal order to suspend Fable 5 and Mythos 5 for foreign nationals, and the practical result was disabling the model for everyone.

• 2

  Anthropic says it is complying, but does not agree: Riley highlights Anthropic's statement that the letter gave no specific technical details and that the action was not transparent, fair, or grounded in clear facts.

• 3

  Fable 5 was the public, nerfed version of Mythos 5: Riley describes Mythos as a five-star frontier model and Fable 5 as a four-star release with safeguards that could reroute users if they pushed into advanced research territory.

• 4

  The core allegation is a jailbreak, not a model failure disclosed in detail: According to Anthropic's understanding of the order, the government believes someone found a way to bypass Fable 5's safeguards, though no company or exploit was publicly named.

• 5

  Users were already treating the model like magic: Riley cites examples from Todd Sanders, Peter Yang, Theo, and his own tests, including live feature-building from customer calls, realistic racing games, spatial planning apps, Minecraft clones, and rebuilding Lovable's mobile app.

• 6

  The economics were already wild: Riley says API use could run $300 to $600 per hour, with his own Lovable clone costing roughly $200 to $300 for 9 to 10 prompts, which fuels speculation that Fable 5 was never sustainable as a broadly available product.