# Look Only When Needed: Certificate-Guided Visual Routing for Efficient Diffusion VLMs > Source: > Published: 2026-10-30 06:30:11+00:00 Diffusion vision-language models (DVLMs) process their entire input at every denoising step. Since visual tokens make up 89-97% of this input on the benchmarks we study, most of the decoding computation is spent repeatedly processing the same image. Visual token pruning methods partially relieve thi