Nemotron 3 Ultra

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...

by NVIDIA

Overview

Quick stats across all benchmark runs.

Score

—

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Avg Latency

0ms

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Pricing

Free in / Free out

per 1M tokens

Context

1000K

tokens

Alternatives

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Benchmark Performance

How this model performs across different benchmarks

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Score Over Time

Performance trends across all benchmark runs

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Benchmark Activity

Number of benchmark runs over time

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Quickstart

View on OpenRouter

Get started with this model using OpenRouter

import { OpenRouter } from "@openrouter/sdk";

const openrouter = new OpenRouter({
  apiKey: "<OPENROUTER_API_KEY>"
});

const completion = await openrouter.chat.completions.create({
  model: "nvidia/nemotron-3-ultra-550b-a55b:free",
  messages: [
    {
      role: "user",
      content: "Hello!"
    }
  ]
});

console.log(completion.choices[0].message.content);

Get your API key at openrouter.ai/keys

Other Models from NVIDIA

Compare performance with other models from the same creator

Model	Latency	Cost/1M	Score
Nemotron 3 Nano 30B A3B	—	$0.13	—
Llama 3.3 Nemotron Super 49B V1.5	31.1s	$0.25	—
Nemotron 3.5 Content Safety (free)	—	Free	—
Nemotron Nano 9B V2	30.1s	$0.10	—
Nemotron 3 Nano Omni (free)	—	Free	—
Nemotron 3 Super	—	Free	—
Llama 3.1 Nemotron 70B Instruct	16.7s	$1.20	—
Llama 3.1 Nemotron Ultra 253B v1	61.9s	$1.20	—
Nemotron Nano 12B 2 VL	34.2s	$0.40	—