Peking University, Tsinghua and Alibaba Open-Source SparkDiffusion for Up to 265x Faster Wan Video Generation

SparkDiffusion pairs 97% sparse attention, 3-step distillation and FP8 to cut a 720P Wan2.1 14B video from 4,769 to 18 seconds on one RTX 5090, a 265x speedup. Code and weights are open.