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OpinionImport AIRelayed· Jack Clark·· 2026-07-06

Import AI 464: Fable writes GPU kernels, AI automation, and analog computing

Import AI 464: Fable writes GPU kernels; AI automation; and analog computation

What happened

Import AI 464 summarizes several research developments. Fable wrote a megakernel on KernelBench-Mega that achieved an 18.71× speedup with CUDA on an RTX PRO 6000 Blackwell, compared with 14.4× for Claude Opus 4.8, 11.14× for GLM-5.2, and 4.34× for GPT 5.5.

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