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Sakana AIの「Fugu Max」「Fugu Ultra v2」

12/9/2026

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Sakana AIが2026年9月11日に発表したAIオーケストレーター、「Fugu Max」と「Fugu Ultra v2」は、単体で機能するのではなく、複数の外部モデルや専門モデルを動的に選択・統合することで、コスト効率と高度な推論性能の両立を目指す独自の設計思想に基づいています。
発表によれば、Fugu Ultra v2は、「複雑で複数のステップが必要なタスクで、最高の品質を出すこと」を追求した最上位モデルの最新版です。ソフトウェア開発の性能を測る「DeepSWE」や、視覚的な推論・データ解釈を行う「Chartography」などのテストにおいて、他社の「GPT-6 Astra」や「Claude Fable 5.1 / 5」を超える、または同等の世界トップクラスのスコアを叩き出しており、Fugu Maxは、「可能な限り低いコストで、高い成果を出すこと」を突き詰めたモデルで、競合となる「GPT-5.6 Terra」や「Claude Sonnet 5」などと比べて40〜60%も安い価格で、コストを抑えつつも、複数の主要ベンチマーク(SWEFish、Terminal Bench 2.1など)で最高スコアを達成しています。
「Fugu Max」と「Fugu Ultra v2」について、生成AIに深掘り調査させましたので、ご参照ください。なお、生成AIによる調査・分析結果は、公開された情報だけに基づくものであり、必ずしも実情を示したものではなく、誤った情報を含む可能性があることにご留意のうえ、ご参照ください。
 
Introducing Fugu Max and Fugu Ultra v2: Orchestrating the Pareto Frontier
September 11, 2026
https://sakana.ai/fugu-max-release/
 
 
Sakana AI’s “Fugu Max” and “Fugu Ultra v2”
“Fugu Max” and “Fugu Ultra v2,” the AI orchestrators announced by Sakana AI on September 11, 2026, are built around a distinctive design philosophy. Rather than operating as standalone models, they dynamically select and integrate multiple external and specialized models, aiming to combine cost efficiency with advanced reasoning capabilities.
According to the announcement, Fugu Ultra v2 is the latest version of the company’s flagship model, designed to “deliver the highest possible quality on complex, multi-step tasks.” On benchmarks such as DeepSWE, which measures software development performance, and Chartography, which assesses visual reasoning and data interpretation, it has achieved world-class scores that match or exceed those of competing models such as GPT-6 Astra and Claude Fable 5.1 / 5.
Fugu Max, meanwhile, is designed to “deliver strong results at the lowest possible cost.” Priced 40–60% lower than competing models such as GPT-5.6 Terra and Claude Sonnet 5, it has achieved the highest scores on several major benchmarks, including SWEFish and Terminal Bench 2.1, while keeping costs down.
I asked generative AI to conduct in-depth research on Fugu Max and Fugu Ultra v2 and am sharing the findings for your reference. Please note that these AI-generated research and analysis results are based solely on publicly available information, may not necessarily reflect the actual situation, and may contain inaccuracies.

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    著者

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  • 知財活動のROICへの貢献
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