Sakana Fugu Ultra now available on AI Gateway
By Steven Van ·
The multi-model system routes each prompt to up to three coordinated agents and is priced with no markup, even under Bring Your Own Key.
Sakana Fugu Ultra, from Sakana AI, is now available on Vercel's AI Gateway. Rather than running as a single model, Fugu Ultra draws on a pool of publicly accessible frontier models, routing a given prompt to between one and three of them and combining their results into one answer. Vercel says that on reasoning and scientific benchmarks its capabilities are similar to Claude Mythos Preview and Fable 5.
To use it, set the model to sakana/fugu-ultra in the AI SDK. Fugu Ultra runs through the Gateway like other models, with no markup on provider pricing and no platform fee on inference, including on Bring Your Own Key requests, and can be tried in the model playground.