Sakana Fugu Ultra now available on AI Gateway

Sakana AI released Fugu Ultra, a model that coordinates multiple frontier models to produce answers, now available on Vercel's AI Gateway. The model matches capabilities of Claude Mythos Preview and Fable 5 on reasoning and scientific benchmarks. AI Gateway offers unified API access, usage tracking, and cost management without markup.

Sakana Fugu Ultra from Sakana AI is now available on AI Gateway https://vercel.com/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 Preview and Fable 5. To use Fugu Ultra, set model to sakana/fugu-ultra in AI SDK https://ai-sdk.dev/ : AI Gateway provides a unified API for calling models, tracking usage and cost, and configuring retries, failover, and performance optimizations for higher-than-provider uptime. It includes built-in custom reporting https://vercel.com/changelog/custom-reporting-ai-gateway , Zero Data Retention support https://vercel.com/blog/zdr-on-ai-gateway , budgets for API keys https://vercel.com/docs/ai-gateway/authentication-and-byok/api-keys , and more. AI Gateway reflects provider pricing with no markup and does not charge a platform fee on inference, including on Bring Your Own Key https://vercel.com/docs/ai-gateway/authentication-and-byok/byok BYOK requests. Try Sakana Fugu Ultra in the model playground https://vercel.com/ai-gateway/models/fugu-ultra .