Old Zhang's AI Learning

Jun 1, 2026 · Artificial Intelligence

NVIDIA Unveils Nemotron 3 Ultra: The Largest US Open‑Source LLM Boosting Agent Capabilities

NVIDIA released Nemotron 3 Ultra, a 550 B‑parameter open‑source LLM with 55 B active MoE parameters, hybrid Mamba‑Transformer architecture, 1 M token context, and three core innovations that deliver superior MMLU, code, math scores and up to 5× throughput versus rivals, though weights are not yet public.