Sakana AI has unveiled Fugu Ultra， an orchestration layer that assembles and routes subtasks across a pool of models through one OpenAI-compatible endpoint.

On most benchmarks， it matches the performance of Fable and Mythos.

Fugu is a learned coordinator model inside a multi-agent system.

"Sakana Fugu is itself an LLM， trained to call various LLMs in an agent pool， including instances of itself recursively. Fugu dynamically orchestrates the world's best models to tackle complex， multi-step tasks."

When you send a prompt， Fugu decides whether to answer alone or hand pieces of the job to other models， then it gathers the outputs and produces one final response.