NVIDIAPaidOperational

Nemotron 3 Ultra 550B A55B

API model name: nemotron-3-ultra-550b-a55b

Nemotron 3 Ultra 550B A55B is NVIDIA's chat model, served on the Api.Airforce unified API. Capabilities include Tool calling. It is priced at $0.66 per million input tokens and $2.64 per million output tokens. That is below the provider's $0.60 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$0.66

Output / 1M tokens

$2.64

Cache read / 1M tokens

$0.13

Cache write / 1M tokens

$0.83

Official input rate

$0.60

Official output rate

$2.40

Api.Airforce price vs. the provider's official rate.

Specifications

Provider: NVIDIA
Type: chat model

Capabilities

Tool calling

What is Nemotron 3 Ultra 550B A55B used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Agents & automation — function calling and tool use for multi-step workflows.

Nemotron 3 Ultra 550B A55B vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Nemotron 3 Ultra 550B A55B	—	—	$0.66	$2.64
Nemotron 3 Nano 30B A3B	—	262K	$0.07	$0.27
Nemotron 3.5 Content Safety	—	—	$0.22	$0.22
Nemotron 3.5 Lightning	—	—	$0.08	$0.22

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Related models

Nemotron 3 Nano 30B A3BNVIDIA · $0.07 / 1M Nemotron 3.5 Content SafetyNVIDIA · $0.22 / 1M Nemotron 3.5 LightningNVIDIA · $0.08 / 1M Nemotron 3.5 Super VLNVIDIA · $0.17 / 1M ChatGPT-4o LatestOpenAI · $2.75 / 1M Claude 3.5 SonnetAnthropic · $3.15 / 1M Claude 3.5 SonnetAnthropic · $3.15 / 1M Claude 3.7 SonnetAnthropic · $3.15 / 1M Claude 3 HaikuAnthropic · $0.21 / 1M Claude 3 OpusAnthropic · $9.50 / 1M Claude Fable 5Anthropic · $7.00 / 1M Claude Fable 5.1Anthropic · $1.53 / 1M

Nemotron 3 Ultra 550B A55B — frequently asked questions

How much does Nemotron 3 Ultra 550B A55B cost?: Nemotron 3 Ultra 550B A55B is billed pay-as-you-go at $0.66 per 1M input tokens and $2.64 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Nemotron 3 Ultra 550B A55B do?: Nemotron 3 Ultra 550B A55B supports Tool calling.
Is Nemotron 3 Ultra 550B A55B free to use?: Nemotron 3 Ultra 550B A55B is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Nemotron 3 Ultra 550B A55B via the API?: Nemotron 3 Ultra 550B A55B is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID nemotron-3-ultra-550b-a55b with your Api.Airforce API key.
Who makes Nemotron 3 Ultra 550B A55B?: Nemotron 3 Ultra 550B A55B is NVIDIA's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Nemotron 3 Ultra 550B A55B via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass nemotron-3-ultra-550b-a55b as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nemotron-3-ultra-550b-a55b",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="nemotron-3-ultra-550b-a55b",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "nemotron-3-ultra-550b-a55b",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);