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Kimi K3 beats Claude Fable 5 at optimizing GPU kernels

It achieved a 28.76x decode speedup on KernelBench.

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4 posts, first seen 2d ago

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Kimi K3 beats Claude Fable 5 at optimizing GPU kernels

It achieved a 28.76x decode speedup on KernelBench.

Reactions from ranked influencers

4 posts

XY Xinyu Yang@Xinyu2ML

1:57 AM · Jul 17, 2026

Now you can ask K3 to write the kernels From https://kernelbench.com

LA Lisan al Gaib@scaling01

10:32 AM · Jul 16, 2026

1150TECH

Kimi-K3 mogging Fable 5 in GPU optimization

10:41 AM · Jul 16, 2026

1855TECH

On several kernel optimization tasks, Kimi K3 matches Fable-5, significantly outperforming even GPT 5.6 sol

ZE Zephyr@zephyr_z9

10:33 AM · Jul 16, 2026

1692TECH

Pretty good

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98K

4 posts, first seen 2d ago

1.2K likes comments

31 comments

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Reactions from the X community

10:41 AM · Jul 16, 2026

1855TECH

On several kernel optimization tasks, Kimi K3 matches Fable-5, significantly outperforming even GPT 5.6 sol

LA Lisan al Gaib@scaling01

10:32 AM · Jul 16, 2026

1150TECH

Kimi-K3 mogging Fable 5 in GPU optimization

ZE Zephyr@zephyr_z9

10:33 AM · Jul 16, 2026

1692TECH

Pretty good

31

148 saves

77 reposts

Digg Deeper

Ask a question below.

Published answers will appear here.

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