Nemotron 3 Nano: Open, Efficient Mixture-of-Experts Hybrid Mamba-Transformer Model for Agentic Reasoning
Authors: name: NVIDIA; name: Aaron Blakeman; name: Aaron Grattafiori; name: Aarti Basant; name: Abhibha Gupta; name: Abhinav Khattar; name: Adi Renduchintala; name: Aditya Vavre; name: Akanksha Shukla; name: Akhiad Bercovich; name: Aleksander Ficek; name: Aleksandr Shaposhnikov; name: Alex Kondratenko; name: Alexander Bukharin; name: Alexandre Milesi; name: Ali Taghibakhshi; name: Alisa Liu; name: Amelia Barton; name: Ameya Sunil Mahabaleshwarkar; name: Amir Klein; name: Amit Zuker; name: Amnon Geifman; name: Amy Shen; name: Anahita Bhiwandiwalla; name: Andrew Tao; name: Ann Guan; name: Anubhav Mandarwal; name: Arham Mehta; name: Ashwath Aithal; name: Ashwin Poojary; name: Asif Ahamed; name: Asma Kuriparambil Thekkumpate; name: Ayush Dattagupta; name: Banghua Zhu; name: Bardiya Sadeghi; name: Barnaby Simkin; name: Ben Lanir; name: Benedikt Schifferer; name: Besmira Nushi; name: Bilal Kartal; name: Bita Darvish Rouhani; name: Boris Ginsburg; name: Brandon Norick; name: Brandon Soubasis; name: Branislav Kisacanin; name: Brian Yu; name: Bryan Catanzaro; name: Carlo del Mundo; name: Chantal Hwang; name: Charles Wang; name: Cheng-Ping Hsieh; name: Chenghao Zhang; name: Chenhan Yu; name: Chetan Mungekar; name: Chintan Patel; name: Chris Alexiuk; name: Christopher Parisien; name: Collin Neale; name: Damon Mosk-Aoyama; name: Dan Su; name: Dane Corneil; name: Daniel Afrimi; name: Daniel Rohrer; name: Daniel Serebrenik; name: Daria Gitman; name: Daria Levy; name: Darko Stosic; name: David Mosallanezhad; name: Deepak Narayanan; name: Dhruv Nathawani; name: Dima Rekesh; name: Dina Yared; name: Divyanshu Kakwani; name: Dong Ahn; name: Duncan Riach; name: Dusan Stosic; name: Edgar Minasyan; name: Edward Lin; name: Eileen Long; name: Eileen Peters Long; name: Elena Lantz; name: Ellie Evans; name: Elliott Ning; name: Eric Chung; name: Eric Harper; name: Eric Tramel; name: Erick Galinkin; name: Erik Pounds; name: Evan Briones; name: Evelina Bakhturina; name: Faisal Ladhak; name: Fay Wang; name: Fei Jia; name: Felipe Soares; name: Feng Chen; name: Ferenc Galko; name: Frankie Siino; name: Gal Hubara Agam; name: Ganesh Ajjanagadde; name: Gantavya Bhatt; name: Gargi Prasad; name: George Armstrong; name: Gerald Shen; name: Gorkem Batmaz; name: Grigor Nalbandyan; name: Haifeng Qian; name: Harsh Sharma; name: Hayley Ross; name: Helen Ngo; name: Herman Sahota; name: Hexin Wang; name: Himanshu Soni; name: Hiren Upadhyay; name: Huizi Mao; name: Huy C Nguyen; name: Huy Q Nguyen; name: Iain Cunningham; name: Ido Shahaf; name: Igor Gitman; name: Ilya Loshchilov; name: Ivan Moshkov; name: Izzy Putterman; name: Jan Kautz; name: Jane Polak Scowcroft; name: Jared Casper; name: Jatin Mitra; name: Jeffrey Glick; name: Jenny Chen; name: Jesse Oliver; name: Jian Zhang; name: Jiaqi Zeng; name: Jie Lou; name: Jimmy Zhang; name: Jining Huang; name: Joey Conway; name: Joey Guman; name: John Kamalu; name: Johnny Greco; name: Jonathan Cohen; name: Joseph Jennings; name: Joyjit Daw; name: Julien Veron Vialard; name: Junkeun Yi; name: Jupinder Parmar; name: Kai Xu; name: Kan Zhu; name: Kari Briski; name: Katherine Cheung; name: Katherine Luna; name: Keshav Santhanam; name: Kevin Shih; name: Kezhi Kong; name: Khushi Bhardwaj; name: Krishna C. Puvvada; name: Krzysztof Pawelec; name: Kumar Anik; name: Lawrence McAfee; name: Laya Sleiman; name: Leon Derczynski; name: Li Ding; name: Lucas Liebenwein; name: Luis Vega; name: Maanu Grover; name: Maarten Van Segbroeck; name: Maer Rodrigues de Melo; name: Makesh Narsimhan Sreedhar; name: Manoj Kilaru; name: Maor Ashkenazi; name: Marc Romeijn; name: Mark Cai; name: Markus Kliegl; name: Maryam Moosaei; name: Matvei Novikov; name: Mehrzad Samadi; name: Melissa Corpuz; name: Mengru Wang; name: Meredith Price; name: Michael Boone; name: Michael Evans; name: Miguel Martinez; name: Mike Chrzanowski; name: Mohammad Shoeybi; name: Mostofa Patwary; name: Nabin Mulepati; name: Natalie Hereth; name: Nave Assaf; name: Negar Habibi; name: Neta Zmora; name: Netanel Haber; name: Nicola Sessions; name: Nidhi Bhatia; name: Nikhil Jukar; name: Nikki Pope; name: Nikolai Ludwig; name: Nima Tajbakhsh; name: Nirmal Juluru; name: Oleksii Hrinchuk; name: Oleksii Kuchaiev; name: Olivier Delalleau; name: Oluwatobi Olabiyi; name: Omer Ullman Argov; name: Ouye Xie; name: Parth Chadha; name: Pasha Shamis; name: Pavlo Molchanov; name: Pawel Morkisz; name: Peter Dykas; name: Peter Jin; name: Pinky Xu; name: Piotr Januszewski; name: Pranav Prashant Thombre; name: Prasoon Varshney; name: Pritam Gundecha; name: Qing Miao; name: Rabeeh Karimi Mahabadi; name: Ran El-Yaniv; name: Ran Zilberstein; name: Rasoul Shafipour; name: Rich Harang; name: Rick Izzo; name: Rima Shahbazyan; name: Rishabh Garg; name: Ritika Borkar; name: Ritu Gala; name: Riyad Islam; name: Roger Waleffe; name: Rohit Watve; name: Roi Koren; name: Ruoxi Zhang; name: Russell J. Hewett; name: Ryan Prenger; name: Ryan Timbrook; name: Sadegh Mahdavi; name: Sahil Modi; name: Samuel Kriman; name: Sanjay Kariyappa; name: Sanjeev Satheesh; name: Saori Kaji; name: Satish Pasumarthi; name: Sean Narentharen; name: Sean Narenthiran; name: Seonmyeong Bak; name: Sergey Kashirsky; name: Seth Poulos; name: Shahar Mor; name: Shanmugam Ramasamy; name: Shantanu Acharya; name: Shaona Ghosh; name: Sharath Turuvekere Sreenivas; name: Shelby Thomas; name: Shiqing Fan; name: Shreya Gopal; name: Shrimai Prabhumoye; name: Shubham Pachori; name: Shubham Toshniwal; name: Shuoyang Ding; name: Siddharth Singh; name: Simeng Sun; name: Smita Ithape; name: Somshubra Majumdar; name: Soumye Singhal; name: Stefania Alborghetti; name: Stephen Ge; name: Sugam Dipak Devare; name: Sumeet Kumar Barua; name: Suseella Panguluri; name: Suyog Gupta; name: Sweta Priyadarshi; name: Syeda Nahida Akter; name: Tan Bui; name: Teodor-Dumitru Ene; name: Terry Kong; name: Thanh Do; name: Tijmen Blankevoort; name: Tom Balough; name: Tomer Asida; name: Tomer Bar Natan; name: Tugrul Konuk; name: Twinkle Vashishth; name: Udi Karpas; name: Ushnish De; name: Vahid Noorozi; name: Vahid Noroozi; name: Venkat Srinivasan; name: Venmugil Elango; name: Vijay Korthikanti; name: Vitaly Kurin; name: Vitaly Lavrukhin; name: Wanli Jiang; name: Wasi Uddin Ahmad; name: Wei Du; name: Wei Ping; name: Wenfei Zhou; name: Will Jennings; name: William Zhang; name: Wojciech Prazuch; name: Xiaowei Ren; name: Yashaswi Karnati; name: Yejin Choi; name: Yev Meyer; name: Yi-Fu Wu; name: Yian Zhang; name: Ying Lin; name: Yonatan Geifman; name: Yonggan Fu; name: Yoshi Subara; name: Yoshi Suhara; name: Yubo Gao; name: Zach Moshe; name: Zhen Dong; name: Zihan Liu; name: Zijia Chen; name: Zijie Yan
Published: 2025-12-23 23:54:32

Abstract: We present Nemotron 3 Nano 30B-A3B, a Mixture-of-Experts hybrid Mamba-Transformer 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 3.3x higher inference throughput than similarly-sized open models like GPT-OSS-20B 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.