# FlashForward

FlashForward publishes the in-flight KV cache already computed by each ordinary denoising forward for reuse by later chunks and complements it with sparse clean anchor KV generated ahead of time for long-range structural guidance, removing cache-update-only forwards; with up to four GPUs it runs 1.16–1.69x faster than HiAR and 1.42–2.92x faster than Self-Forcing for 16 FPS videos of 20 seconds or longer across 1.3B and 14B backbones at 480p and 720p, and the 1.3B model at 480p scores 0.838 on VBench-1.0 while remaining stable at 20s, 35s, and 65s.

FlashForward publishes the in-flight KV cache already computed by each ordinary denoising forward for reuse by later chunks and complements it with sparse clean anchor KV generated ahead of time for long-range structural guidance, removing cache-update-only forwards; with up to four GPUs it runs 1.16–1.69x faster than HiAR and 1.42–2.92x faster than Self-Forcing for 16 FPS videos of 20 seconds or longer across 1.3B and 14B backbones at 480p and 720p, and the 1.3B model at 480p scores 0.838 on VBench-1.0 while remaining stable at 20s, 35s, and 65s.