Nemotron 3 NanoOpen Source
Released
Nemotron 3 Nano is an AI model released by NVIDIA on Monday, Dec 15 2025, 119 days after Nemotron Nano 2. It is an open-source model — weights, and training code/data, released under an open license. It is a 30B parameter model. Benchmark results (shown below) cover LiveCodeBench, and GPQA Diamond.
Benchmarks
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Reasoning & science
About
Nemotron 3 Nano, released December 15, 2025, opened NVIDIA's first fully in-house Nemotron generation — no Llama base underneath — and made the architectural bet explicit: a hybrid of Mamba-2 state-space layers, mixture-of-experts feed-forwards and a small number of attention layers, with 30 billion total parameters and roughly 3.5 billion active per token. The design traded a little per-token capacity for throughput on long agentic transcripts, which is what NVIDIA said models would spend 2026 doing.
Its launch card reported 73.0% on GPQA Diamond, 68.3% on LiveCodeBench and 89.1% on AIME 2025 without tools — unusually strong mathematics for the size — and the release was open in the fullest sense the industry used: weights, the bulk of the datasets and the training recipes all published. Super and Ultra tiers were promised for 2026 and arrived in March and June of that year.
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Frequently asked questions
Nemotron 3 Nano was released by NVIDIA on Monday, Dec 15 2025.
Nemotron 3 Nano was built by NVIDIA. The dominant AI chipmaker, publishing the open Nemotron model family. Ships weights, datasets and training recipes to seed demand for its hardware rather than to sell a chatbot.
Nemotron 3 Nano reports 2 tracked benchmark scores — LiveCodeBench: 68.3%; GPQA Diamond: 73%. Scores are the figures published at release by NVIDIA.
Nemotron 3 Nano is reported at 30B parameters.
Yes. Nemotron 3 Nano is open source: the model weights are published together with training code and data under an open license, so it can be downloaded, self-hosted, fine-tuned, and in principle reproduced from scratch.
NVIDIA's previous tracked release was Nemotron Nano 2 on Aug 18 2025, 119 days earlier. It was followed by Nemotron 3 Super on Mar 11 2026.