The Open Weights
LatestModelsLeaderboardsCompanies
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

Browse

  • All models
  • Companies
  • Categories
  • Leaderboards

About

  • About
  • Editorial policy
  • Hardware estimates
  • RSS feed
  • llms.txt
  • Newsletter

© 2026 The Open Weights. An independent publication.

PrivacyTermsSMSAggregated by Claude · curated by humans.
LatestOpenMOSS1.0
OpenMOSSText → Speech

MOSS-TTS: A New Multilingual Text-to-Speech Model

The new system from the OpenMOSS Team uses a novel 'delay-pattern' architecture to generate natural-sounding speech in Chinese, English, and Japanese.

Feb 6, 2026
NotableOther
MOSS-TTS

The OpenMOSS Team has released MOSS-TTS, a new open-source model for generating high-quality speech from text. The system is multilingual, capable of producing audio in Chinese, English, and Japanese, making it a versatile tool for a range of voice applications.

The model's key innovation lies in its architecture. MOSS-TTS is a non-autoregressive system that uses a technique called a "delay-pattern." This approach allows it to model the rhythm and prosody of speech more effectively than some traditional methods, which can result in more natural-sounding intonation without generating audio one step at a time.

A Two-Stage System

Like many modern text-to-speech systems, MOSS-TTS operates in two stages:

  • First, a text-to-spectrogram model converts the input text into a mel-spectrogram, a visual representation of the sound's frequency spectrum.
  • Second, a HiFi-GAN vocoder takes this spectrogram and synthesizes it into a final audio waveform.

The complete model, along with instructions for use, is available on the Hugging Face Hub. While the weights are openly accessible, they are released under a custom license that prohibits commercial use, a key consideration for developers looking to integrate the technology.

Sources

  • OpenMOSS-Team/MOSS-TTS

    Hugging Face

    Visit
OlderSoul-AILab Releases Zero-Shot Singing Voice ModelSoul AILab · Music · 9 months agoNewerNanbeige Releases 3B Chinese-Enhanced Language ModelNanbeige · Text / LLM · 9 months ago

Get the model

Hugging Face

Specs

Languages20 languages
Size17 GB
PrecisionBF16
ArchitectureMossTTSDelayModel
LicenseOTHER
Downloads6.6K
Likes435

Can you run it?

Runs on a laptop — about 9.5 GB at FP8.

  • BF16 (as published)

    24 GB GPU (RTX 3090 / 4090) · 32 GB Mac

    18 GB
  • FP8

    12 GB GPU (RTX 3060 / 4070) · 16 GB Mac

    9.5 GB
Your machine

Based on Hugging Face weights metadata. Assumes an 8K context and ~1 GB runtime overhead; actual needs vary. How we estimate


Modalities

Text → Speech

The Weekly Weights

Every open release that mattered, one email a week.

0 comments

No comments yet. Be the first to weigh in.

More from OpenMOSS

All OpenMOSS releases →
MOSS-Image SFT
OpenMOSS/Text → ImageRuns on a laptop

OpenMOSS Releases MOSS-Image Under Apache 2.0

The academic team behind the MOSS project moves into text-to-image generation with a permissively licensed model and a fine-tuned SFT variant.

Oct 11, 2026
MOSS-Image SFT
OpenMOSS/Text → ImageRuns on a laptop

OpenMOSS Releases Apache-2.0 Bilingual Image Model

MOSS-Image Base arrives as a permissively licensed text-to-image foundation with English and Chinese support.

Oct 11, 2026
OpenMOSS/Vision-Language

OpenMOSS Debuts MOSS-VL for Real-Time Vision Interaction

A new open vision-language model family uses gated cross-attention to enable streaming, low-latency multimodal exchanges.

Aug 14, 2026

More in Text → Speech

All Text → Speech →
LFM3-Omni-2B
LiquidAI/Any-to-AnyRuns anywhere

Liquid AI's LFM3-Omni-2B brings any-to-any AI to the edge

The 2-billion-parameter model combines vision, audio and speech-to-speech in a package small enough to run on device.

Oct 21, 2026
IBM/Any-to-Any

IBM's Granite Switch 4.1 Unifies Chat, Logic, Speech

A single endpoint now routes text conversation, decision-making, and speech synthesis across IBM's Apache-licensed Granite line.

Oct 15, 2026
Fish Audio Drama 3
Fishaudio/Text → SpeechWorkstation GPU

Fish Audio's Drama 3 brings MoE to open TTS

The open-source speech model pairs a 35B mixture-of-experts backbone with voice cloning and directed performance control.

Oct 1, 2026