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NVIDIA Releases Nemotron 3 Ultra, a 550B-Parameter Open MoE Model

NVIDIA Releases Nemotron 3 Ultra, a 550B-Parameter Open MoE Model
  • Foundation Models
  • Open Source
  • AI Agents

NVIDIA has released Nemotron 3 Ultra, an open-weight large language model designed for autonomous agents. Built as a Mixture-of-Experts (MoE) model with 550B total and 55B active parameters, it ships with weights, training data and recipes fully open under the OpenMDW 1.1 license.

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