Nemotron 3 Ultra

NVIDIA chatreasoningtool_use Long

API ID: nvidia/nemotron-3-ultra-550b-a55b-20260604

Compare Calculate
Input Price
$0.60
/1M tokens
Output Price
$2.40
/1M tokens
Cached Input
$0.12
Save 80%

About 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...

💰
Price Ranking
#1011 lowest price among 1240 Chat models

Model Specifications

Context Length
512k
Max Output
203k
Release Date
2026-06-04
Capabilities
chat reasoning tool_use
Input Modalities
text
Output Modalities
text

Best For

  • Complex reasoning, math problems, multi-step logic
  • Conversations, content writing, general assistance

Consider Alternatives For

  • Image understanding (needs vision capability)
  • Simple Q&A (cheaper models available)

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

Personal AI Assistant
$0.99
/month
50 conversations/day, ~500 tokens each
Customer Service Bot
$30.60
/month
1000 tickets/day, ~800 tokens each
Data Analysis Pipeline
$42.30
/month
500 analyses/day, ~2k tokens each
Calculate Your Custom Usage

NVIDIA Model Lineup

Compare all models from NVIDIA to find the best fit

Model Input Output Context Capabilities
Nemotron 3 Ultra Current Free Free 512k chat reasoning tool_use
Nemotron-4 340B Instruct Free Free 4k chat
Nemotron-4 340B Instruct Free Free 4k chat
Llama 3.1 Nemotron Nano 8B v1 Free Free 131k chat
Llama 3.1 Nemotron Nano 8B v1 Free Free 131k chat
Llama 3.3 Nemotron Super 49B v1 Free Free 131k chat
View All NVIDIA Models →

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💡 Cheaper Alternatives

Same Brand (NVIDIA)

Nemotron Nano 9B V2
$0.04 $0.16 131k
Nemotron 3 Nano 30B A3B
$0.05 $0.20 262k
Nemotron 3 Nano 30B A3B
$0.05 $0.20 262k

Cross Brand

GTE-Base Other
$0.0050 Free 512
E5-Base-v2 Other
$0.0050 Free 512
paraphrase-MiniLM-L6-v2 Other
$0.0050 Free 512

🚀 Quick Start

Get started with Nemotron 3 Ultra API

OpenAI-compatible SDK 
from openai import OpenAI

client = OpenAI(
    base_url="https://api.provider.com/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="nvidia/nemotron-3-ultra-550b-a55b-20260604",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(response.choices[0].message.content)

Resources

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