NVIDIA: Nemotron 3 Ultra
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters o…
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Open / InstallLast updated July 27, 2026
Description
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
Author
nvidia
Platform
api
Pricing model
paid
Categories
Research
Tags
openrouter
llm
nvidia
text
Capabilities
- 512,288 token context