NVIDIA: Nemotron 3.5 Lightning (free)
The NVIDIA Nemotron 3.5 Lightning is a free AI model that processes text input with a maximum of 1000000 context characters and supports reasoning capabilities. It can handle text modality inputs and offers tools support but does not provide structured output. This model is worth considering for those on a tight budget, as it has no pricing associated with its use. Its blended benchmark score of 19.9 across one independent benchmark indicates that it performs similarly to other models in the market; however, further testing would be required to confirm its performance against a larger set of benchmarks. Those seeking a cost-effective option for text processing tasks may find the NVIDIA Nemotron 3.5 Lightning suitable for their needs.
Benchmark results
Independent, published benchmarks. Blended score 16.9 across 1 benchmark, last refreshed 2026-09-27. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 21.2 |
- Model ID
- nvidia/nemotron-3.5-lightning:free
- Vendor
- nvidia
- Released
- August 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 Ultra (free)
NVIDIA: Nemotron 3 Super (free)
NVIDIA: Nemotron 3.5 Content Safety
NVIDIA: Nemotron 3 Ultra
NVIDIA: Nemotron 3 Super
NVIDIA: Nemotron 3.5 Lightning
Quick answers
- Is NVIDIA: Nemotron 3.5 Lightning (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 3.5 Lightning (free)'s context window?
- 1,000,000 tokens, roughly 1,500 pages of text in a single request.
- Does NVIDIA: Nemotron 3.5 Lightning (free) support tool calling?
- It supports tool calling, a reasoning mode.
- Can NVIDIA: Nemotron 3.5 Lightning (free) process images?
- No, it is text-only on the input side.