Nvidia Nemotron 3 Ultra 550B A55B BF16
NVIDIA Nemotron 3 Ultra 550B A55B BF16 is a 550-billion parameter chat model built by NVIDIA, utilizing a hybrid LatentMoE architecture that combines Mamba-2, Mixture of Experts (MoE), and Attention with Multi-Token Prediction. It is designed for frontier reasoning, complex agentic workflows, and long-context analysis.
Input
Output
Context
262K
Max Output
128K
Parameters
560.5B
Technical Specifications
Model TypeChat
Context Window262,144 tokens
Max Output Tokens128,000 tokens
Parameters560.5B
Release DateJun 3, 2026
Training CutoffSep 1, 2025
Licenseother
Open SourceYes
Input Modalities
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Output Modalities
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Capabilities
Resources & Links
Estimated GPU Requirements for Nvidia Nemotron 3 Ultra 550B A55B BF16
Estimates based on INT8 quantization. Actual requirements vary by framework and configuration.
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Data sourced from official provider APIs and documentation
Last updated: Aug 8, 2026
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