Nemotron 3 Ultra (free)

NVIDIA chatreasoningtool_use Long Free

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

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Input Price
Free
/1M tokens
Output Price
Free
/1M tokens

About Nemotron 3 Ultra (free)

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...

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Price Ranking
#6 lowest price among 1240 Chat models — Top 20% cheapest!

Model Specifications

Context Length
1.0M
Max Output
66k
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)
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This model is completely free!

No token costs - use it without worrying about API bills.

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NVIDIA Model Lineup

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Nemotron 3 Ultra (free) Current Free Free 1.0M chat reasoning tool_use
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🚀 Quick Start

Get started with Nemotron 3 Ultra (free) 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)

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