Nemotron 3.5 Lightning
Nemotron 3.5 Lightning is an open-weight language model from NVIDIA, released on August 11, 2026.
- Developer
- NVIDIA
- Released
- August 11, 2026
- Total parameters
- 30B
- Active parameters per token
- 3B
- Architecture
- MoE
- Context window
- 1M
- Input
- Text
- License
- OpenMDW License Agreement v1.1
- Commercial use
- Yes
- Official weights, GB
- 65.8 GB
- Hugging Face repository
- huggingface.co
- Checked on
Nemotron 3.5 Lightning is a mixture-of-experts model with 30B total parameters, of which 3B are active for each token. NVIDIA lists a context window of up to 1M tokens. The model takes text input. The weights are released under the OpenMDW License Agreement v1.1, which allows commercial use.
The official weights on Hugging Face take about 65.8 GB in BF16. Running the model needs at least that much memory across GPUs and system RAM, plus room for the context cache; quantized versions need less.
- Total parameters, billions
- 30B
- Active parameters, billions
- 3B
- Context window, tokens
- 1M
- License type
- Custom license
- License conditions
- OpenMDW 1.1: redistributions must include the agreement and origin notices.
- Weights precision
- BF16
- Official quantized or alternative versions
- nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4
- License text
- raw.githubusercontent.com
- Sources
Page URL Hugging Face model card https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16/raw/main/README.md Hugging Face weights index https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16/raw/main/model.safetensors.index.json
Questions
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Sources
Every figure comes from the developer’s model card, license text and official announcements, and from the model’s Hugging Face repository metadata. Each model page lists its sources and the date they were checked; the register is rechecked every week.