AnalysisDevelopersJuly 14, 2026

New FP4 attention kernels for B300 achieve up to 1.69x speedup

The kernels target B300 hardware and offer up to 1.69x speedup over FlashAttention 4 (FA4), as detailed in a tweet from haoailab. The results include benchmark comparisons and kernel design notes.

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New FP4 attention kernels for B300 achieve up to 1.69x speedup