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The browser-training speedup was a curve, not one headline number

The WebGPU path did not have one honest speedup number. Against multithreaded WASM SIMD, the measured improvement was 2.6 times on the Small preset, 6.8 times on Medium, 9.3 times on Large, and 12.1…

  • WebGPU path showed variable speedup across presets (2.6x Small, 6.8x Medium, 9.3x Large, 12.1x XL)
  • Loss drift varied from 1.1% to 2.5% across presets
  • Speedup linked to larger model sizes, dispatch overhead less significant in larger presets

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