DBMSolver: Training-free diffusion bridge sampler achieves 5x speedup for image translation

Researchers introduced DBMSolver, a training-free sampler for Diffusion Bridge Models that reduces function evaluations by up to 5x while improving image quality. Accepted to CVPR 2026, the method exploits the semi-linear structure of DBM underlying SDE/ODE via exponential integrators. On the DIODE benchmark at 20 NFEs, FID drops 53% versus the 2nd-order baseline.