Sakana AI releases Fugu, a multi-agent system that beats Fable 5.

According to CoinWorld, Sakana AI has released Fugu, a multi-agent collaborative system that enables dynamic orchestration of multiple models through a single API. In several authoritative industry benchmark tests across academia, inference, and programming, the top-of-the-line version, Fugu Ultra, outperformed Anthropic's flagship model, Fable 5, and Mythos Preview. Fugu Ultra is now available on OpenRouter, supporting tool calls and multimodal input. Model input costs $5 per million tokens, output costs $30, and cache reads cost $0.50.