Sakana Fugu

Sakana Fugu is a new product from Sakana AI that delivers a full multi-agent orchestration system as a single foundation model. Fugu dynamically orchestrates the world's best models to tackle complex, multi-step tasks, accessible through a single model API. The result is multi-agent intelligence delivering frontier-level performance without any single-vendor dependency or the complexity of a traditional multi-agent system.

Designed for developers, enterprises, and nations seeking resilience against vendor lock-in and geopolitical export controls, Fugu bypasses the traditional monolithic model structure by dynamically routing queries to a swappable pool of specialized AI agents.

Features:

• Single API, Multi-Agent Power

• Two Model Variants

• Recursive Orchestration

• OpenAI-Compatible API

• Vendor-Lock-in Resilience

• Compliance Controls

• Research-Backed Architecture

• Codex Integration

FAQs:

What makes Fugu different from a simple AI router?

Rather than making a one-shot routing decision, Fugu breaks a query down, interleaves reasoning with delegation, and dynamically assigns sub-tasks to multiple models in parallel or sequence before synthesizing a final output.

When should I use Fugu vs Fugu Ultra?

Default to Fugu for interactive, latency-sensitive work. Reach for Fugu Ultra when correctness and depth outweigh speed. Both are included on every subscription tier.

What use cases is Fugu best for?

Large diffs, multi-file reasoning, regression risk detection, test suggestions, reproducing papers, autonomous ML research loops, vulnerability investigation, deep multi-step investigation across documents, and stable persona maintenance across long sessions.

Is the orchestration logic open source?

The full hosted Fugu Ultra orchestration service is not open source. Sakana has a public GitHub repository with setup materials and the technical report, but the API service and exact orchestration behavior are proprietary.