# Boson AI's Higgs Audio v3 Offers Expressive, Multilingual TTS

> The new 4-billion-parameter text-to-speech model is available for non-commercial use, promising fine-grained control over vocal delivery.

Published by The Open Weights on Jun 4, 2026. Canonical: https://theopenweights.com/news/higgs-audio-v3-tts-4b-2be3

## Key facts

- Company: Bosonai
- Model: Higgs Audio v3 TTS 4B
- Version: v3-4b
- Category: Text → Speech
- Modalities: Text → Speech
- License: Other (Open weights, commercial use allowed)
- Parameters: 4B
- Architecture: HiggsMultimodalQwen3ForConditionalGeneration
- Precision: BF16
- Weights size: 9.3 GB
- Languages: 102 languages
- Significance: notable
- Published: 2026-06-04
- Last verified: 2026-06-24
- Hugging Face: https://huggingface.co/bosonai/higgs-audio-v3-tts-4b
- Canonical URL: https://theopenweights.com/news/higgs-audio-v3-tts-4b-2be3

Boson AI has released Higgs Audio v3, a new 4-billion-parameter model for text-to-speech (TTS) synthesis. The model is designed to generate highly expressive and controllable speech across multiple languages, positioning it as a powerful new tool for creators and researchers in the open-source audio space.

## Fine-Grained Vocal Control

The primary differentiator for Higgs Audio v3 is its focus on granular control over vocal delivery. The system allows users to influence the output's style, emotion, and prosody in two main ways:
*   **Text Prompts:** Users can describe the desired vocal characteristics directly in a text prompt.
*   **Audio References:** The model can also clone a voice and its style from a reference audio clip.

This dual-control mechanism provides flexibility for a range of applications, from character voice generation to dynamic audiobook narration. The model currently supports eight languages, including English, French, German, Spanish, and Polish.

Higgs Audio v3 enters a competitive field of open TTS models. Its 4B parameter size and emphasis on direct, prompt-based style control offer a compelling alternative for developers and creators who require more than just a simple voice clone. This level of expressiveness is critical for applications where emotional nuance and specific delivery are key.

The model is available for download from the [Boson AI repository on Hugging Face](https://huggingface.co/bosonai/higgs-audio-v3-tts-4b). It has been released under a Creative Commons (CC-BY-NC-SA-4.0) license, which allows for broad non-commercial use and adaptation.

## Get the model

- [Hugging Face](https://huggingface.co/bosonai/higgs-audio-v3-tts-4b)

## Sources

- [bosonai/higgs-audio-v3-tts-4b](https://huggingface.co/bosonai/higgs-audio-v3-tts-4b) — Hugging Face, Jun 4, 2026

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "Boson AI's Higgs Audio v3 Offers Expressive, Multilingual TTS", The Open Weights, Jun 4, 2026, https://theopenweights.com/news/higgs-audio-v3-tts-4b-2be3