The Information Machine

NVIDIA Nemotron 3 Ultra: Hybrid SSM/MoE Architecture Launch and Benchmarks

Synthesis history

2 versions, newest first.

  1. Version 2 2026-06-05 18:33 UTC · 72 items

    SemiAnalysis emerged on June 5 as a new voice with sharp ideological criticism of the 'Nemotron Coalition' — an apparent NVIDIA-organized consortium for open-source model development not previously mentioned in the thre…

  2. Version 1 2026-06-05 02:17 UTC · 65 items

    NVIDIA launched Nemotron 3 Ultra, a 550B-total-parameter (55B active) hybrid Mamba SSM/MoE model, at Jensen Huang's Computex 2026 keynote and shipped it on June 4, 2026 [^24876][^24834]. The model is positioned as the m…