Nvidia drops Nemotron 3 Ultra to supercharge long-running agents
Nvidia just launched Nemotron 3 Ultra, an open 550B MoE model with 55B active parameters tailored for complex multi-turn agent workflows. It combines Mamba and Transformer layers to slash agentic task costs by up to 30% while pushing 5x higher throughput than comparable open models. Nvidia also rolled out a 4B safety guardrail and a sub-100ms multilingual speech model.