Multi-Resolution Flow Matching: Training-Free Diffusion Acceleration via Staged Sampling
MrFlow speeds up image generators by first making a rough low‑res image, then upscaling in pixel space, adding light noise, and doing one last high‑res pass. It reports 10–25× faster full pipelines on FLUX and Qwen‑Image with almost no quality loss. If you ship image models, this is a blueprint for big speedups without retraining.
Xingyu Zheng, Xianglong Liu