On August 17, 2026, NVIDIA announced on its developer blog that it had developed the Nemotron 3.5 Lightning NVFP4 model using NVIDIA Model Optimizer, based on QAD (Quantitative Perceptual Training). Previously, on June 26, 2026, NVIDIA had released the Nemotron 3 Ultra NVFP4 checkpoint created using the same tool. Both advancements aim to improve the quantization accuracy and inference efficiency of models through NVIDIA Model Optimizer.
NVIDIA has released Nemotron 3.5 Lightning NVFP4 and Nemotron 3 Ultra…
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2026-06-26
Released Nemotron 3 Ultra NVFP4 checkpoints
NVIDIA has released Nemotron 3 Ultra model checkpoints, using the innovative 4-bit floating-point (NVFP4) quantization format to optimize weight transmission efficiency in long context windows.
2026-08-17
Released Nemotron 3.5 Lightning NVFP4
NVIDIA has released Nemotron 3.5 Lightning NVFP4 checkpoints, developed based on NVIDIA Model Optimizer. While maintaining precision, it increases throughput up to 4 times and compresses the model to 22GB (the original full-precision size is 66GB).