nvidia

NVIDIA: Nemotron 3 Ultra (free)

The Nemotron 3 Ultra from NVIDIA is designed to process text inputs with an impressive context length of up to one million tokens and can generate responses with up to 65,536 completion tokens. It supports both reasoning and the use of tools, making it versatile for complex tasks. While its capabilities are robust, the model's performance is reflected in a blended benchmark score of 63.0 across three independent evaluations. Given its free price point, the Nemotron 3 Ultra is ideal for those on a budget or looking to test functionalities without significant cost. Its suitability hinges on your specific needs; it excels where reasoning and tool support are required but may not outshine more specialized models in every aspect.

Quality Score
88/100
price + capability + benchmarks
Input Price
Free
per 1M tokens
Output Price
Free
per 1M tokens
Context Window
1,000,000
tokens

Benchmark results

Independent, published benchmarks. Blended score 63.0 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →

BenchmarkMeasuresScore
AI Index broad capability composite 63.2
AI Index Coding software engineering tasks 81.3
AI Index Agentic multi-step tool-using tasks 45.4
Model ID
nvidia/nemotron-3-ultra-550b-a55b:free
Vendor
nvidia
Released
June 2026
Tokenizer
Other
Input Modalities
text
Output Modalities
text
Max Output
65,536 tokens
Tool Calling
✓ supported
Structured Output
not supported
Reasoning Mode
✓ supported
Vision
text only
Audio
no
Moderated
no

Similar models

Quick answers

Is NVIDIA: Nemotron 3 Ultra (free) free to use?
Yes. It is currently listed at no cost per token via OpenRouter, subject to provider rate limits.
What is NVIDIA: Nemotron 3 Ultra (free)'s context window?
1,000,000 tokens, roughly 1,500 pages of text in a single request.
Does NVIDIA: Nemotron 3 Ultra (free) support tool calling?
It supports tool calling, a reasoning mode.
Can NVIDIA: Nemotron 3 Ultra (free) process images?
No, it is text-only on the input side.