Sakana claims its AI model router Fugu Ultra v1.1 now beats Fable 5 without even including it in the pool

Sakana AI has released Fugu Ultra v1.1, an update to its model routing software that reportedly improves performance by up to 7.9 points over the previous version. The update introduces a Claude Code-compatible endpoint, though the service remains inaccessible to users in the European Union and the company's performance claims have not yet been independently verified.