nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16 · Hugging Face
r/LocalLLaMA
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Generative AI
AI Hardware
Open Source AI
AI Tools
Model Summary Total Parameters 550B (55B active) Architecture LatentMoE - Mamba-2 + MoE + Attention hybrid with Multi-Token Prediction (MTP) Context Length Up to 1M tokens Minimum GPU Requirement 8x GB200/B200/GB300/B300, 16x H100, 8x H200 ed Languages English, French, Spanish, Italian, German, Japanese, Korean, Hindi, Korean, Brazilian Portuguese, and Chinese Best For Frontier reasoning, complex agentic workflows, long-context analysis, tool use, multilingual reasoning, high-stakes RAG Reasoning Mode Configurable on/off via chat template ( enable_thinking=True/False ) License Open.