models · nvidia

Nemotron 3 Ultra 550B A55B

Nemotron 3 Ultra 550B A55B — catalogued from third-party evaluation data; no weights held by Sovereign Frontier.

What this registry has checked

Quarantine. We hold the publisher’s own published hash for these weights and have recorded it against this entry. We have not downloaded and hashed the weights ourselves, so the hash is the publisher’s claim, not our measurement.

Method	hf-published-sha256

Re-check this yourself → Source → Full record →

What is recorded

Publisher	nvidia
Origin	United States
Licence	NVIDIA-Open-Model
Publisher’s own licence statement	other
Parameters	560,524,578,816 (560.5B)
Context window	1,000,000 tokens
Modality	text->text
Native precision	BF16
Pulls recorded here	6
Downloads reported upstream	441,153

Reported scores

GPQA Diamond	86.7
IFBench	81.4
Humanity's Last Exam	28.4

Reported by a third party and recorded here, not re-run by us. Source: artificialanalysis.ai/api/v2.

Elsewhere in the registry

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Registry record as of 2026-08-13. Identity, licence and parameter count are properties of a release and do not move; tier can, and the verify link above re-checks it against the live registry rather than this page.