Sakana Fugu Ultra now available on AI Gateway (opens in new tab)

**Published:** June 22, 2026 | **Authors:** Rohan Taneja, Jerilyn Zheng --- Sakana Fugu Ultra from Sakana AI is now available on AI Gateway. Fugu Ultra is built on a pool of publicly accessible frontier models, rather than running as a single model. It coordinates several models, routing work to 1-3 agents depending on the problem and combining their results into a single answer. Based on reasoning and scientific benchmarks, Fugu Ultra has capabilities similar to those of Claude Mythos Pr...