Nemotron 3 Nano Omni 30B A3B
NVIDIA · 2026-04-28 · 33B parameters
Nemotron 3 Nano Omni 30B A3B is NVIDIA's open-weight omni-modal reasoning model, combining a Nemotron 3 Nano 30B-A3B hybrid Mamba-2/Transformer MoE language backbone with a C-RADIOv4-H vision encoder, a Parakeet audio encoder, and multimodal projectors. It accepts text, image, video, and audio and produces text, supports up to 262,144 tokens, and allows reasoning to be toggled or constrained by an inference-time budget. The model uses Conv3D temporal compression for video and optionally supports runtime Efficient Video Sampling; this exact BF16 checkpoint contains 33,015,632,214 parameters and is governed by the NVIDIA Open Model Agreement.