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Nemotron 3 Ultra 550B-A55B
AvailableNVIDIAFrontierOpen weights
NVIDIA's largest Nemotron 3 open-weight hybrid Mamba-Transformer MoE, tuned for agentic reasoning, coding, planning, and tool calling.
Specifications
- License
- Open weights · Nemotron Open Model License
- Weights
- Downloadable
- Architecture
- hybrid
- Parameters
- 550B · 55B active
- Context window
- 1M tokens
- Max output
- 16K tokens
- Knowledge cutoff
- —
- Price (in / out, $/M)
- —
- Modalities
- TextCode
Benchmarks
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Vendor-reported figures are claims until independently verified. See methodology.