About Nemotron 3 Ultra
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...
Specifications
- Provider
- NVIDIA
- Context Length
- 1,000,000 tokens
- Input Types
- text
- Output Types
- text
- Category
- nvidia/nemotron-3-ultra-550b-a55b-20260604
- Added
- 6/4/2026