Sakana AI

Fugu UltraSakana AI

Fugu Ultra is the higher-performance model in Sakana AI's Fugu family. Rather than a standard monolithic language model, it is a learned multi-agent orchestration system: a model trained to route tasks across a swappable pool of underlying models and to recursively call instances of itself. It is optimized for complex, multi-step reasoning, coding, and agentic workflows, with orchestration tokens billed as standard input/output tokens.

Sakana NamazuSakana AI

Sakana Namazu is a Japanese-specialized reasoning model from Sakana AI, based on Kimi K2.6 with additional training for Japanese language and business contexts. It is suited for Japanese instruction following and business workflows, supports a 262K context window, and accepts text, image, and file inputs.