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arXiv · 2602.11298

Voxtral Realtime

Mistral-AI·:·Alexander H. Liu·Andy Ehrenberg·Andy Lo·Chen-Yo Sun·Guillaume Lample·Jean-Malo Delignon·Khyathi Raghavi Chandu·Patrick von Platen·Pavankumar Reddy Muddireddy·Rohin Arora·Sanchit Gandhi·Sandeep Subramanian·Soham Ghosh·Srijan Mishra·Abhinav Rastogi·Adrien Sadé·Alan Jeffares·Albert Jiang·Alexandre Cahill·Alexandre Gavaudan·Alexandre Sablayrolles·Amélie Héliou·Amos You·Andrew Bai·Angele Lenglemetz·Anmol Agarwal·Anton Eliseev·Antonia Calvi·Arjun Majumdar·Avi Sooriyarachchi·Baptiste Bout·Baptiste Rozière·Baudouin De Monicault·Benjamin Tibi·Charlotte Cronjäger·Clémence Lanfranchi·Connor Chen·Corentin Barreau·Corentin Sautier·Cyprien Courtot·Darius Dabert·Diego de las Casas·Elizaveta Demyanenko·Elliot Chane-Sane·Enguerrand Paquin·Etienne Goffinet·Fabien Niel·Faruk Ahmed·Federico Baldassarre·Gabrielle Berrada·Gaëtan Ecrepont·Gauthier Guinet·Genevieve Hayes·Georgii Novikov·Giada Pistilli·Guillaume Kunsch·Guillaume Martin·Guillaume Raille·Gunjan Dhanuka·Gunshi Gupta·Han Zhou·Harshil Shah·Hope McGovern·Hugo Thimonier·Indraneel Mukherjee·Irene Zhang·Jaeyoung Kim·Jan Ludziejewski·Jason Rute·Joachim Studnia·John Harvill·Jonas Amar·Joséphine Delas·Josselin Somerville Roberts·Julien Tauran·Karmesh Yadav·Kartik Khandelwal·Kilian Tep·Kush Jain·Laurence Aitchison·Laurent Fainsin·Léonard Blier·Lingxiao Zhao·Louis Martin·Lucile Saulnier·Luyu Gao·Maarten Buyl·Manan Sharma·Margaret Jennings·Marie Pellat·Mark Prins·Martin Alexandre·Mathieu Poirée·Mathilde Guillaumin·Matthieu Dinot·Matthieu Futeral·Maxime Darrin·Maximilian Augustin
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Abstract

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.

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Mistral-AI, :, Alexander H. Liu, Andy Ehrenberg, Andy Lo, Chen-Yo Sun, Guillaume Lample, Jean-Malo Delignon, Khyathi Raghavi Chandu, Patrick von Platen, Pavankumar Reddy Muddireddy, Rohin Arora, Sanchit Gandhi, Sandeep Subramanian, Soham Ghosh, Srijan Mishra, Abhinav Rastogi, Adrien Sadé, Alan Jeffares, Albert Jiang, Alexandre Cahill, Alexandre Gavaudan, Alexandre Sablayrolles, Amélie Héliou, Amos You, Andrew Bai, Angele Lenglemetz, Anmol Agarwal, Anton Eliseev, Antonia Calvi, Arjun Majumdar, Avi Sooriyarachchi, Baptiste Bout, Baptiste Rozière, Baudouin De Monicault, Benjamin Tibi, Charlotte Cronjäger, Clémence Lanfranchi, Connor Chen, Corentin Barreau, Corentin Sautier, Cyprien Courtot, Darius Dabert, Diego de las Casas, Elizaveta Demyanenko, Elliot Chane-Sane, Enguerrand Paquin, Etienne Goffinet, Fabien Niel, Faruk Ahmed, Federico Baldassarre, Gabrielle Berrada, Gaëtan Ecrepont, Gauthier Guinet, Genevieve Hayes, Georgii Novikov, Giada Pistilli, Guillaume Kunsch, Guillaume Martin, Guillaume Raille, Gunjan Dhanuka, Gunshi Gupta, Han Zhou, Harshil Shah, Hope McGovern, Hugo Thimonier, Indraneel Mukherjee, Irene Zhang, Jaeyoung Kim, Jan Ludziejewski, Jason Rute, Joachim Studnia, John Harvill, Jonas Amar, Joséphine Delas, Josselin Somerville Roberts, Julien Tauran, Karmesh Yadav, Kartik Khandelwal, Kilian Tep, Kush Jain, Laurence Aitchison, Laurent Fainsin, Léonard Blier, Lingxiao Zhao, Louis Martin, Lucile Saulnier, Luyu Gao, Maarten Buyl, Manan Sharma, Margaret Jennings, Marie Pellat, Mark Prins, Martin Alexandre, Mathieu Poirée, Mathilde Guillaumin, Matthieu Dinot, Matthieu Futeral, Maxime Darrin, Maximilian Augustin. 2026-02-11. Voxtral Realtime. https://arxiv.org/abs/2602.11298

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