Originally published on AI Tech Connect.
What you need to know Sakana AI released Fugu Max and Fugu Ultra v2 on 11 September 2026, under the announcement title “Introducing Fugu Max and Fugu Ultra v2: Orchestrating the Pareto Frontier”. Fugu is not a monolithic model. It is a learned multi-agent orchestration system — a language model trained to route tasks across a fixed pool of open and specialised models, and to recursively call instances of itself. Sakana reports Fugu Ultra v2 scoring 74.3 on DeepSWE and 48.3 on Chartography, and says it is best or joint-best on five of eight benchmarks (GDP.pdf, Chartography, SWEFish, DeepSWE, Toolathon), top-two on seven of eight. It does this without Claude Fable 5, Claude Fable 5.1 or GPT-6 Astra in its pool — three of the strongest systems currently shipping — and Sakana claims it still…
Top comments (0)