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NVIDIA: Nemotron 3 Ultra

NVIDIA

NVIDIA Nemotron 3 Ultra is an open-weights frontier-scale reasoning and chat model with 550B total parameters and 55B active MoE parameters, built for complex agentic workflows, long-context analysis, and tool use.

Parameters
560.5B
Context
1000000
Modality
text->text
License
open_weights
Open source
Yes

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