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NVIDIA Nemotron 3 Nano 4B vs NVIDIA Nemotron 3 Ultra 550B-A55B

Put two to four models side by side on the fields that decide a deployment: context, price, region, license, languages, hosting, and what is verified.

NVIDIA Nemotron 3 Nano 4BNVIDIA Nemotron 3 Ultra 550B-A55B
Provider NVIDIANVIDIA
Parameters 3.97B560.5B
Context window 262kNot verified: the provider has not documented this claim.
License otherother
Modalities texttext
Release date 07 Mar 202603 Jun 2026
Languages Strong: en
Adequate: —
Strong: en, fr, es, it, de, pt
Adequate: ja, ko, hi, ar, zh, he, mtp
Open weights yesyes
Tasks Low cost, Reasoning, Retrieval (RAG), SummarisationReasoning, Coding, Multilingual support

Where two models differ, this table shows the difference and stops. LLM EU publishes no winner badge without a documented score for that task, and a missing figure stays missing instead of becoming a zero.

When to use it

NVIDIA Nemotron 3 Nano 4B

Strengths

  • long context for a 4B model
  • high published maths scores for its size
  • runs on a single small accelerator

Limits

  • English only, per the model card
  • vendor licence rather than an OSI one
  • benchmark figures come from NVIDIA’s own harness

Tasks

Low cost, Reasoning, Retrieval (RAG), Summarisation

NVIDIA Nemotron 3 Ultra 550B-A55B

Strengths

  • open weights are published on Hugging Face and can be downloaded without a vendor agreement
  • the model page lists 6 languages the European Union publishes in, including en, fr, es, it

Limits

  • catalogue only — LLM EU does not run this model, and nothing on this card implies an LLM EU endpoint
  • no evaluation has been run by LLM EU
  • the openmdw-1.1 (other) licence is a custom agreement whose commercial terms were not established from its published text, so commercial serving is not permitted until a human clears it; the router must not route to it
  • the published configuration records no context window, so the card carries none
  • at 560.5B parameters, self-hosting needs a multi-node deployment rather than a single server

Tasks

Reasoning, Coding, Multilingual support

Tasks: Reasoning

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