I have been trying Sakana Fugu Ultra-high and, first, it is incredibly slow: my typical coding tests (shaders, interactive scenes) take 30 minutes to run

And the results are… fine. It does not match Fable in real use.

Its harbor is a good example: https://t.co/xVqulPBsQf https://t.co/KJRLIlSJfX

— Ethan Mollick (@emollick) 22 juin 2026

I have been trying Sakana Fugu Ultra-high and, first, it is incredibly slow: my typical coding tests (shaders, interactive scenes) take 30 minutes to run And the results are… fine. It does not match Fable in real use. Its harbor is a good example: https://
ai-harbor-town-gallery.netlify.app/#sakura-ultra-
high
…

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