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Developing Nemotron 3.5 Lightning NVFP4 with QAD Using NVIDIA Model Optimizer

NVIDIA Developer Blog · published 17 August 2026

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https://developer.nvidia.com/topics/ai/nemotron

developer.nvidia.com

https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-NVFP4

huggingface.co

Introducing NVFP4 for Efficient and Accurate Low-Precision Inference Read at the source ↗

developer.nvidia.com

NVIDIA Nemotron 3.5 Lightning Delivers Fast, Accurate Specialized Task Execution for Long-Running Agents Read at the source ↗

developer.nvidia.com

https://github.com/NVIDIA/Model-Optimizer

github.com

https://docs.google.com/document/d/1XDI6Hw_-7Q_f910GdZmrkYLiLUgExZ5F6x9GAzmjJ8M/edit?tab=t.0

docs.google.com

https://github.com/NVIDIA/Model-Optimizer/tree/main/examples/llm_qat

github.com

https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16

huggingface.co

https://www.nvidia.com/en-us/data-center/dgx-b300/

nvidia.com

https://developer.nvidia.com/blog/?p=121323&preview=1&_ppp=d2b7fc0a78

developer.nvidia.com

https://arxiv.org/pdf/2512.02010

arxiv.org

https://github.com/NVIDIA/Model-Optimizer/tree/main/examples/hf_ptq

github.com

https://huggingface.co/datasets/nvidia/Nemotron-Post-Training-Dataset-v1

huggingface.co

https://huggingface.co/datasets/nvidia/Nemotron-Post-Training-Dataset-v2

huggingface.co

https://github.com/NVIDIA/Model-Optimizer/tree/main/modelopt_recipes/huggingface/models/nvidia/Nemotron-3.5-Lightning-30B-A3B-BF16/ptq/w4a16_nvfp4_4o6.yaml

github.com

https://github.com/NVIDIA/Model-Optimizer/blob/main/tools/launcher/examples/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16/megatron_lm_qad.yaml

github.com

https://github.com/NVIDIA/Model-Optimizer/blob/main/modelopt_recipes/huggingface/models/nvidia/Nemotron-3.5-Lightning-30B-A3B-BF16/ptq/w4a16_nvfp4_4o6.yaml

github.com

https://github.com/NVIDIA/Megatron-LM/blob/main/examples/post_training/modelopt/finetune.sh

github.com

https://github.com/NVIDIA-NeMo/Megatron-Bridge

github.com

https://github.com/NVIDIA/Model-Optimizer/blob/main/tools/launcher/examples/nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16/mbridge_qad.yaml

github.com

https://github.com/NVIDIA/Model-Optimizer/tree/47a33db9b639c5d25baaa3e49526f9703491eb08/examples/llm_ptq

github.com