NVIDIA Nemotron Two-Tower 30B Hits 2.42x Throughput at 98.7% Quality

NVIDIA's Nemotron-TwoTower-30B-A3B uses a frozen autoregressive context tower paired with a diffusion denoiser that fills token blocks in parallel rather than sequentially. On the 30B-A3B backbone, the mask-diffusion approach achieves 2.42x wall-clock generation throughput while retaining 98.7% of autoregressive benchmark quality.