Under a TF32-enabled baseline and multi-distribution hidden tests, the best LLM kernel generator (GPT-5.5) achieves 0.88x geometric mean speedup versus PyTorch, not the reported 1.43x.
Sawyer and Stanimire Tomov and Piotr Luszczek and Ichitaro Yamazaki and Jack J
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KernelBench-Verified: Do LLM-Generated Kernels Actually Beat PyTorch?
Under a TF32-enabled baseline and multi-distribution hidden tests, the best LLM kernel generator (GPT-5.5) achieves 0.88x geometric mean speedup versus PyTorch, not the reported 1.43x.