Introduction

We present Nemotron 3 Nano 30B-A3B, a Mixture-of-Experts hybrid MambaTransformer language model. Nemotron 3 Nano was pretrained on 25 trillion text tokens, including more than 3 trillion new unique tokens over Nemotron 2, followed by supervised fine tuning and large-scale RL on diverse environments. Nemotron 3 Nano achieves better accuracy than our previous generation Nemotron 2 Nano while activating less than half of the parameters per forward pass. It achieves up to 3.3× higher inference throughput than similarly-sized open models like GPT-OSS20B and Qwen3-30B-A3B-Thinking-2507, while also being more accurate on popular benchmarks. Nemotron 3 Nano demonstrates enhanced agentic, reasoning, and chat abilities and supports context lengths up to 1M tokens. We release both our pretrained Nemotron 3 Nano 30B-A3B Base and post-trained Nemotron 3 Nano 30B-A3B checkpoints on Hugging Face.

Benchmarking

Training

Parameters

Authors

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Abhinav Khattar, Aleksander Ficek, Alisa Liu, Arham Mehta, Asif Ahamed, Ayush Dattagupta, Benedikt Schifferer, Brandon Norick, Branislav Kisacanin, Dan Su, Dane Corneil, Daria Gitman, Dhruv Nathawani, Dima Rekesh, Divyanshu Kakwani, Edgar Minasyan, Eileen Long, Ellie Evans, Eric Tramel, Evelina Bakhturina, Felipe Soares, Feng Chen, Gantavya Bhatt, George Armstrong, Igor Gitman, Ivan Moshkov, Jane Polak Scowcroft, John Kamalu, Johnny Greco, Joseph Jennings, Jupinder Parmar, Kezhi Kong, Markus Kliegl, Maarten Van Segbroeck, Matvei Novikov, Mehrzad Samadi, Miguel Martinez, Mohammad Shoeybi, Mostofa Patwary, Nabin Mulepati, Oleksii Hrinchuk, Rabeeh Karimi Mahabadi, Rima Shahbazyan, Riyad Islam, Roger Waleffe, Rohit Watve, Sadegh Mahdavi, Sanjeev Satheesh, Sean Narentharen, Shrimai Prabhumoye, Shubham Pachori, Shubham Toshniwal, Shuoyang Ding, Somshubra Majumdar, Stephen Ge, Sumeet Kumar Barua, Suseella Panguluri, Syeda Nahida Akter, Vahid Noorozi, Vitaly Kurin, Vitaly Lavrukhin, Wasi Uddin Ahmad, Wei Du, Wei Ping, Yejin Choi, Yev Meyer, Ying Lin, Zihan Liu, Abhinav Khattar, Bita Darvish Rouhani, Deepak Narayanan, Ilya Loshchilov, Jatin Mitra, Joey Guman, Mohammad Shoeybi, Mostofa Patwary, Kezhi Kong, Krishna C. Puvvada, Maor Ashkenazi, Nidhi Bhatia, Pavlo Molchanov, Rabeeh Karimi Mahabadi, Rasoul Shafipour, Ritika Borkar, Roger Waleffe, Ryan Prenger, Sanjeev Satheesh, Venmugil Elango, Yonggan Fu, Aarti Basant, Ashwath Aithal, Abhinav Khattar, Deepak Narayanan, Duncan Riach, Eric Harper, Hexin Wang, Jared Casper, Jimmy Zhang, Kezhi Kong, Mike Chrzanowski, Nima Tajbakhsh, Pranav Prashant Thombre, Roger Waleffe, Russell J. Hewett, Seonmyeong Bak, Shiqing Fan, Vijay Korthikanti, Xiaowei Ren, Yashaswi Karnati, Zijie Yan, Abhinav Khattar, Brandon Norick, Dan Su, Eric Tramel, Deepak Narayanan, John Kamalu, Joseph Jennings, Jupinder Parmar, Markus Kliegl, Miguel Martinez, Mohammad Shoeybi, Mostofa Patwary, Kezhi Kong, Kevin Shih, Rabeeh Karimi Mahabadi, Roger Waleffe, Ryan Prenger, Shrimai Prabhumoye, Sanjeev Satheesh, Syeda Nahida Akter, Ying Lin, Abhinav Khattar, Aditya Vavre, Anjulie Agrusa, Ankur Verma, Asit Mishra, Asma Kuriparambil Thekkumpate, Ben Lanir, Bita Darvish Rouhani, Bryan Catanzaro, Carlo del Mundo, Cyril Meurillon, Daniel Lo, Daria Levy, Darko Stosic, Deepak Narayanan, Dusan Stosic, Eric Chung, Eric Tramel, Evgeny Tsykunov, Frank Sun, Herbert Hum, Jimmy Zhang, Jinhang Choi, Jining Huang, Keith Wyss, Kirthi Shankar, Lizzie Wei, Mahdi Nazemi, Matt Kulka, Michael Andersch, Mikail Khona, Mike Chrzanowski, Minseok Lee, Mohammad Shoeybi, Mostofa Patwary, Nima Tajbakhsh, Nishant Sharma, Pasha Shamis, Paul Gibbons, Przemek Tredak, Qiyu Wan, Rabeeh Karimi Mahabadi, Rachit Garg, Robert Hesse, Roger Waleffe, Russell Hewett, Sangkug Lim, Sanjeev Satheesh, Stas Sergienko, Tim Moon, Victor Cui, Vinay Rao, Xiaowei Ren, Yigong Qin, Zhongbo Zhu, Boris Ginsburg, Cheng-Ping Hsieh, Dan Su, Dima Rekesh, Faisal Ladhak, Fei Jia, John Kamalu, Kezhi Kong, Krishna C. 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