Voxtral Realtime
Authors: name: Alexander H. Liu, name: Andy Ehrenberg, name: Andy Lo, name: Chen-Yo Sun, name: Guillaume Lample, name: Jean-Malo Delignon, name: Khyathi Raghavi Chandu, name: Patrick von Platen, name: Pavankumar Reddy Muddireddy, name: Rohin Arora, name: Sanchit Gandhi, name: Sandeep Subramanian, name: Soham Ghosh, name: Srijan Mishra, name: Abhinav Rastogi, name: Alan Jeffares, name: Albert Jiang, name: Alexandre Sablayrolles, name: Amélie Héliou, name: Andrew Bai, name: Angele Lenglemetz, name: Anmol Agarwal, name: Anton Eliseev, name: Antonia Calvi, name: Arjun Majumdar, name: Baptiste Bout, name: Baptiste Rozière, name: Baudouin De Monicault, name: Benjamin Tibi, name: Clémence Lanfranchi, name: Connor Chen, name: Corentin Barreau, name: Corentin Sautier, name: Cyprien Courtot, name: Darius Dabert, name: Diego de las Casas, name: Elliot Chane-Sane, name: Enguerrand Paquin, name: Faruk Ahmed, name: Federico Baldassarre, name: Gabrielle Berrada, name: Gaëtan Ecrepont, name: Gauthier Guinet, name: Genevieve Hayes, name: Georgii Novikov, name: Giada Pistilli, name: Guillaume Martin, name: Gunjan Dhanuka, name: Gunshi Gupta, name: Han Zhou, name: Indraneel Mukherjee, name: Irene Zhang, name: Jaeyoung Kim, name: Jan Ludziejewski, name: Jason Rute, name: Joachim Studnia, name: John Harvill, name: Jonas Amar, name: Josselin Somerville Roberts, name: Julien Tauran, name: Karmesh Yadav, name: Kartik Khandelwal, name: Kush Jain, name: Laurence Aitchison, name: Léonard Blier, name: Lingxiao Zhao, name: Louis Martin, name: Lucile Saulnier, name: Luyu Gao, name: Maarten Buyl, name: Manan Sharma, name: Margaret Jennings, name: Marie Pellat, name: Mark Prins, name: Mathieu Poirée, name: Mathilde Guillaumin, name: Matthieu Dinot, name: Matthieu Futeral, name: Maxime Darrin, name: Maximilian Augustin, name: Mert Unsal, name: Mia Chiquier, name: Nathan Grinsztajn, name: Neha Gupta, name: Olivier Bousquet, name: Olivier Duchenne, name: Patricia Wang, name: Paul Jacob, name: Paul Wambergue, name: Paula Kurylowicz, name: Philomène Chagniot, name: Pierre Stock, name: Piotr Miłoś, name: Prateek Gupta, name: Pravesh Agrawal, name: Quentin Torroba, name: Ram Ramrakhya, name: Rishi Shah, name: Romain Sauvestre, name: Roman Soletskyi, name: Rosalie Millner, name: Sagar Vaze, name: Samuel Humeau, name: Siddharth Gandhi, name: Sumukh Aithal, name: Szymon Antoniak, name: Teven Le Scao, name: Théo Cachet, name: Theo Simon Sorg, name: Thibaut Lavril, name: Thomas Chabal, name: Thomas Foubert, name: Thomas Robert, name: Thomas Wang, name: Tim Lawson, name: Tom Bewley, name: Tom Edwards, name: Tyler Wang, name: Valeriia Nemychnikova, name: Van Phung, name: Vedant Nanda, name: Victor Jouault, name: Virgile Richard, name: Vladislav Bataev, name: Wassim Bouaziz, name: Wen-Ding Li, name: William Marshall, name: Xinghui Li, name: Xingran Guo, name: Xinyu Yang, name: Yannic Neuhaus, name: Yihan Wang, name: Zaccharie Ramzi, name: Zhenlin Xu
Organization: Mistral AI_

We introduce Voxtral Realtime, a natively streaming automatic speech recognition model that matches offline transcription quality at sub-second latency. Unlike approaches that adapt offline models through chunking or sliding windows, Voxtral Realtime is trained end-to-end for streaming, with explicit alignment between audio and text streams. Our architecture builds on the Delayed Streams Modeling framework, introducing a new causal audio encoder and Ada RMS-Norm for improved delay conditioning. We scale pretraining to a large-scale dataset spanning 13 languages. At a delay of 480ms, Voxtral Realtime achieves performance on par with Whisper, the most widely deployed offline transcription system. We release the model weights under the Apache 2.0 license.