# Kyutai Releases 1.6B Bilingual TTS Model

> The French AI lab's new open-source model generates streaming audio in English and French under a permissive license.

Published by The Open Weights on Jun 30, 2025. Canonical: https://theopenweights.com/news/fr-b8oz

## Key facts

- Company: Kyutai
- Model: Kyutai TTS 1.6B (en/fr)
- Version: 1.0
- Category: Text → Speech
- Modalities: Text → Speech
- License: CC BY 4.0 (Fully open, commercial use allowed)
- Parameters: 1.6B
- Architecture: tts
- Languages: English, French
- Significance: notable
- Published: 2025-06-30
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/kyutai/tts-1.6b-en_fr
- Canonical URL: https://theopenweights.com/news/fr-b8oz

French AI research lab Kyutai has released a new 1.6-billion-parameter text-to-speech (TTS) model that generates high-quality audio in both English and French. The model is available under a permissive Creative Commons license (CC-BY-4.0), allowing for broad use, including in commercial applications.

The system is built on what the team calls the Moshi stack, an adaptation of the VoiceCraft architecture. A key feature is its ability to support streaming audio generation, making it suitable for real-time applications where low latency is critical, such as conversational agents or live narration tools.

## A New Voice in Open TTS

While the open-source landscape for large language models has exploded, the space for high-quality, permissively licensed TTS models is less crowded. Kyutai's release provides a significant new building block for developers creating voice-enabled products without relying on proprietary, closed-source APIs.

As a non-profit lab, Kyutai's contribution adds valuable diversity to an ecosystem often dominated by a few large tech companies. Developers can access the model weights, explore an interactive demo, and find usage examples on the official [Hugging Face repository](https://huggingface.co/kyutai/tts-1.6b-en_fr).

## Get the model

- [Hugging Face](https://huggingface.co/kyutai/tts-1.6b-en_fr)

## Sources

- [kyutai/tts-1.6b-en_fr](https://huggingface.co/kyutai/tts-1.6b-en_fr) — Hugging Face, Jun 30, 2025

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "Kyutai Releases 1.6B Bilingual TTS Model", The Open Weights, Jun 30, 2025, https://theopenweights.com/news/fr-b8oz