Japanese AI startup Sakana AI has launched a multi-agent orchestration system called Fugu, which dynamically coordinates multiple models through a single API. According to the company, the top-tier version — Fugu Ultra — beats Anthropic's flagship Fable 5 and Mythos Preview across several academic, reasoning, and coding benchmarks. Notably, Fable 5 and other closed models are not included in Fugu's underlying model pool; Fugu achieves these results purely by orchestrating GPT-5.5, Gemini…