The Open Weights
LatestModelsLeaderboardsUpcomingCompanies
Subscribe
The Open Weights

The daily record of open-source AI. New model releases, leaderboards, and what's coming next — written for people who ship.

Refreshed every 12 hours

Discover

  • Latest releases
  • New today
  • Trending models
  • Upcoming launches

Browse

  • All models
  • Companies
  • Categories
  • Leaderboards

About

  • About
  • Editorial policy
  • RSS feed
  • Newsletter

© 2026 The Open Weights. An independent publication.

Aggregated by Claude · written with Gemini · curated by humans.

LatestBoson AI2.0
Boson AIText → Speech

Boson AI Releases Higgs Audio v2 for Expressive TTS

The new 3-billion-parameter model focuses on generating expressive, multilingual speech and is fully open for commercial use under an Apache 2.0 license.

Jul 1, 2025
NotableOther
Boson AI · Text → Speech
Higgs Audio v2 (3B)
Higgs Audio v2 (3B)

Boson AI has introduced Higgs Audio v2, a new open-source model for text-to-speech and audio generation. With three billion parameters, the model is designed to produce expressive and natural-sounding voices across multiple languages, adding a notable new entry to the competitive audio synthesis landscape.

The release is significant not just for its scale but also for its accessibility. Higgs Audio v2 is available under a permissive Apache 2.0 license, clearing the way for both research and commercial applications. This makes it a compelling alternative to proprietary APIs, offering developers a powerful foundation for building custom audio-centric features.

A Focus on Expressive Synthesis

According to Boson AI, the model specializes in "expressive voice synthesis," aiming for a higher degree of nuance and emotion in its output compared to more monotonic TTS systems. This capability is crucial for applications requiring more natural human-like speech, such as:

  • Dynamic character voices in gaming and entertainment
  • Engaging narration for audiobooks and podcasts
  • More sophisticated and personable virtual assistants

The Higgs Audio v2 base model is now available on Hugging Face, allowing the community to begin experimenting with its capabilities and fine-tuning it for specific use cases.

Sources

  • bosonai/higgs-audio-v2-generation-3B-base

    Hugging Face

    Visit

0 comments

Protected by Turnstile

No comments yet. Be the first to weigh in.

Get the model

Weights

Specs

Parameters3B
Context window—
LicenseOTHER
Downloads127.5K

Modalities

Text → Speech

More in Text → Speech

Zyphra
Zonos 2
Zonos 2
Zyphra/Text → Speech

Zyphra Releases Open-Source Zonos 2 TTS Model

The new text-to-speech model offers a commercially permissive alternative for developers in a field still dominated by closed-source APIs.

Jun 11, 2026
Boson AI
Higgs Audio v3 TTS 4B
Higgs Audio v3 TTS 4B
Boson AI/Text → Speech

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.

Jun 4, 2026
OpenMOSS
MOSS-TTS v1.5
MOSS-TTS v1.5
OpenMOSS/Text → Speech

MOSS-TTS Aims for More Robust Speech Synthesis

A new text-to-speech model introduces 'delay-pattern decoding' to solve common word skipping and repetition errors in parallel generation.

May 25, 2026