Nemotron Ultra by NVIDIA

Model family · Model APIs & inference · indexed, not reviewed

on OpenRouter

Not reviewed

No score, grade or rank. This listing is facts from OpenRouter and our own checks, and it stays out of the rankings until the panel reviews it.

How the index works

NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
What OpenRouter says about Nemotron 3 Ultra

Facts

Maker: NVIDIA
Models: 1 on OpenRouter
Newest: nvidia/nemotron-3-ultra-550b-a55b

From OpenRouter and our own checks. JSON · Markdown

Why it's listed

OpenRouter lists it, with prices from the providers that serve it.

Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.

Models 1

Model	Released	Context	Input / 1M	Output / 1M	Supports
Nemotron 3 Ultra `nvidia/nemotron-3-ultra-550b-a55b`	Jun 2026	262k	$0.50	$2.20	tools, structured output, reasoning, caching, free variant

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