# Mistral AI Releases Voxtral, an Open-Source TTS Model

> The French AI leader expands beyond large language models with a new, 4-billion-parameter model for generating multilingual speech.

Published by The Open Weights on Nov 17, 2025. Canonical: https://theopenweights.com/news/voxtral-4b-tts-ton3

## Key facts

- Company: Mistral AI
- Model: Voxtral 4B TTS
- Version: 4B TTS
- Category: Text → Speech
- Modalities: Text → Speech
- License: Apache 2.0 (Open weights, commercial use allowed)
- Parameters: 4B
- Languages: 9 languages
- Significance: notable
- Published: 2025-11-17
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/mistralai/Voxtral-4B-TTS-2603
- Canonical URL: https://theopenweights.com/news/voxtral-4b-tts-ton3

Mistral AI, known for its influential open-weight language models, has ventured into a new domain with the release of Voxtral 4B TTS. The new 4-billion-parameter model is designed for multilingual text-to-speech (TTS) synthesis and is available under the permissive Apache 2.0 license.

The release marks a significant expansion for the company, moving it beyond its core focus on text generation and into the competitive space of open-source generative audio. While Mistral has built its reputation on models like Mistral 7B and Mixtral, Voxtral is its first major public release dedicated to audio synthesis.

## A New Voice in Open Audio

The model's size suggests a focus on generating high-quality, natural-sounding speech across multiple languages. Developers and researchers can access the model and its technical details directly from its [official repository on Hugging Face](https://huggingface.co/mistralai/Voxtral-4B-TTS-2603).

By choosing the Apache 2.0 license, Mistral AI is enabling broad commercial and research use. The availability of a powerful, open-source TTS model could accelerate development in areas like customized voice assistants, automated content creation, and accessibility tools, providing a strong alternative to proprietary APIs.

## Get the model

- [Hugging Face](https://huggingface.co/mistralai/Voxtral-4B-TTS-2603)

## Sources

- [mistralai/Voxtral-4B-TTS-2603](https://huggingface.co/mistralai/Voxtral-4B-TTS-2603) — Hugging Face, Nov 17, 2025

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "Mistral AI Releases Voxtral, an Open-Source TTS Model", The Open Weights, Nov 17, 2025, https://theopenweights.com/news/voxtral-4b-tts-ton3