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.
Benchmark results
Independent, published benchmarks. Blended score 63.0 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| 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
NVIDIA: Nemotron 3.5 Lightning (free)
NVIDIA: Nemotron 3 Nano 30B A3B (free)
NVIDIA: Nemotron Nano 12B 2 VL (free)
NVIDIA: Nemotron Nano 9B V2 (free)
NVIDIA: Nemotron 3 Super (free)
NVIDIA: Nemotron 3 Ultra
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.