Nemotron 3 Ultra

NVIDIA🇺🇸 USMajor lab· Jun 4, 2026

ReasoningTextopen weightsAPI✎ Editorial

NVIDIA's powerful open-weights MoE model: hybrid LatentMoE + MTP layers, 1M context, 550B/55B active. Free on OpenRouter. Focus: complex multi-agent workflows, code, math, science.

Editorial

Context: 1M tokens
Params: 550B MoE (55B active)
License: NVIDIA Open Model License
Modalities: text, code → text, code

3 variants

550B	550B MoE (55B active)	1M	HF · OR
550B A55B NVFP4	550B-A55B		HF
550B A55B Base BF16	550B-A55B		HF

Sources

HuggingFace OpenRouter Blog

Deutsch

NVIDIAs mächtiges open-weights MoE-Modell: Hybrid LatentMoE + MTP-Layer, 1M Kontext, 550B/55B aktiv. Auf OpenRouter kostenlos nutzbar. Fokus: komplexe Multi-Agenten-Workflows, Code, Mathe, Wissenschaft.

Benchmarks

Benchmark	Domain	Value	Evidence
LongBench v2vendor number	long-context	61.9 % correct	90
LiveCodeBenchvendor number	coding	89 % pass@1	80
SWE-bench Verifiedvendor number	coding	70.7 % solved	71
RULERvendor number	long-context	94.7 % correct	68
MMLUvendor number	knowledge	86.8 % correct	43

Vendor-reported numbers are marked and count with factor 0.7 in rankings. The evidence score says how much a benchmark still tells you today.

Provenance

Detected: Jun 4, 2026
First source: kuratiert
Description: Editorial
Editorially reviewed: yes