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Sakana AI's New "Fugu Ultra" Beats Claude Fable 5 (Sakana Fugu)

Jun 23, 2026
sakana aimulti-agent systemsfugu ultraai benchmarks
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Summary

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Sakana AI's new 'Fugu Ultra' is a multi-agent orchestration system that outperforms leading frontier models like Claude Fable 5 and Mythos in various benchmarks.

Sakana AI has introduced 'Sakana Fugu', a multi-agent orchestration system designed to dynamically select and delegate tasks to the best-suited models within an agent pool, including recursive instances of itself. The flagship 'Fugu Ultra' model demonstrates superior performance over top-tier closed-source models across benchmarks such as LiveCodeBench, GPQA-D, and CharXiv Reasoning, while providing a pathway to AI sovereignty by bypassing export control risks. The system functions by decomposing large tasks into sub-tasks and delegating them to expert models while autonomously routing around unavailable resources.

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Worth watching if: You are interested in the evolution of multi-agent AI architectures and want to see how Sakana AI's latest approach compares to existing frontier models in code and reasoning benchmarks.

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