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NVIDIA: Nemotron 3 Ultra
● Excellent8.5
/ 10
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
| Attribute | Value |
|---|---|
| Lab | Nvidia |
| Tags | Intelligent Agentic Open Weight |
| Overall Score | 8.5/10 |
| Release Date | 2026-06 |
| Context Window | 1,000,000 tokens |
| Input Price / 1M | $0.50 |
| Output Price / 1M | $2.50 |
| Input Modalities | Text |
| Output Modalities | Text |
Strengths
- Open frontier-reasoning model with 55B active parameters (550B total MoE)
- Huge 1M-token hybrid Transformer-Mamba context window
- Designed for long-running agent orchestration and complex deep research
- Efficient pricing at competitive open-model rates
Weaknesses
- NVIDIA is newer to LLMs — less ecosystem maturity vs established labs
- Performance on pure benchmark scores not yet independently validated
Best For
- Multi-step agent orchestration and coding pipelines
- Deep research with very long documents
- Enterprise agentic AI at open-model pricing
Sources & Further Reading
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Scores are aggregated from public benchmarks (MMLU, HumanEval, MATH, GSM8K, LMSYS) and normalized to a 1–10 scale. Methodology →