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arXiv · 2603.25551

Voxtral TTS

Mistral-AI·:·Alexander H. Liu·Alexis Tacnet·Andy Ehrenberg·Andy Lo·Chen-Yo Sun·Guillaume Lample·Henry Lagarde·Jean-Malo Delignon·Jaeyoung Kim·John Harvill·Khyathi Raghavi Chandu·Lorenzo Signoretti·Margaret Jennings·Patrick von Platen·Pavankumar Reddy Muddireddy·Rohin Arora·Sanchit Gandhi·Samuel Humeau·Soham Ghosh·Srijan Mishra·Van Phung·Abdelaziz Bounhar·Abhinav Rastogi·Adrien Sadé·Alan Jeffares·Albert Jiang·Alexandre Cahill·Alexandre Gavaudan·Alexandre Sablayrolles·Amélie Héliou·Amos You·Andrew Bai·Andrew Zhao·Angele Lenglemetz·Anmol Agarwal·Anton Eliseev·Antonia Calvi·Arjun Majumdar·Arthur Fournier·Artjom Joosen·Avi Sooriyarachchi·Aysenur Karaduman Utkur·Baptiste Bout·Baptiste Rozière·Baudouin De Monicault·Benjamin Tibi·Bowen Yang·Charlotte Cronjäger·Clémence Lanfranchi·Connor Chen·Corentin Barreau·Corentin Sautier·Cyprien Courtot·Darius Dabert·Diego de las Casas·Elizaveta Demyanenko·Elliot Chane-Sane·Emmanuel Gottlob·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·Jacques Sun·Jan Ludziejewski·Jason Rute·Jérémie Dentan·Joachim Studnia·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
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Abstract

We introduce Voxtral TTS, an expressive multilingual text-to-speech model that generates natural speech from as little as 3 seconds of reference audio. Voxtral TTS adopts a hybrid architecture that combines auto-regressive generation of semantic speech tokens with flow-matching for acoustic tokens. These tokens are encoded and decoded with Voxtral Codec, a speech tokenizer trained from scratch with a hybrid VQ-FSQ quantization scheme. In human evaluations conducted by native speakers, Voxtral TTS is preferred for multilingual voice cloning due to its naturalness and expressivity, achieving a 68.4\% win rate over ElevenLabs Flash v2.5. We release the model weights under a CC BY-NC license.

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Mistral-AI, :, Alexander H. Liu, Alexis Tacnet, Andy Ehrenberg, Andy Lo, Chen-Yo Sun, Guillaume Lample, Henry Lagarde, Jean-Malo Delignon, Jaeyoung Kim, John Harvill, Khyathi Raghavi Chandu, Lorenzo Signoretti, Margaret Jennings, Patrick von Platen, Pavankumar Reddy Muddireddy, Rohin Arora, Sanchit Gandhi, Samuel Humeau, Soham Ghosh, Srijan Mishra, Van Phung, Abdelaziz Bounhar, Abhinav Rastogi, Adrien Sadé, Alan Jeffares, Albert Jiang, Alexandre Cahill, Alexandre Gavaudan, Alexandre Sablayrolles, Amélie Héliou, Amos You, Andrew Bai, Andrew Zhao, Angele Lenglemetz, Anmol Agarwal, Anton Eliseev, Antonia Calvi, Arjun Majumdar, Arthur Fournier, Artjom Joosen, Avi Sooriyarachchi, Aysenur Karaduman Utkur, Baptiste Bout, Baptiste Rozière, Baudouin De Monicault, Benjamin Tibi, Bowen Yang, Charlotte Cronjäger, Clémence Lanfranchi, Connor Chen, Corentin Barreau, Corentin Sautier, Cyprien Courtot, Darius Dabert, Diego de las Casas, Elizaveta Demyanenko, Elliot Chane-Sane, Emmanuel Gottlob, 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, Jacques Sun, Jan Ludziejewski, Jason Rute, Jérémie Dentan, Joachim Studnia, 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. 2026-04-06. Voxtral TTS. https://arxiv.org/abs/2603.25551

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