D3D: Decoupled Diffusion Drafting Asynchronous Speculative Decoding Technology
D3D breaks the dependency on the hidden states of the target model through an independent diffuser, achieving asynchronous drafting and verification. In seven benchmarks, D3D combined with block denoising and auxiliary autoregressive supervision increases the average decoding speed of Qwen3-8B and Qwen3-32B by 5.00 times and 5.71 times respectively, outperforming DFlash (4.03 times and 3.67 times), and reaching 7.48 times acceleration on GSM8K. The code, model checkpoints, and benchmark scripts are open source.


















