MOSS TTS
MOSS‑TTS Family is an open‑source speech and sound generation model family from MOSI.AI and the OpenMOSS team. It is designed for high‑fidelity, high‑expressiveness, and complex real‑world scenarios, covering stable long‑form speech, multi‑speaker dialogue, voice/character design, environmental sound effects, and real‑time streaming TTS.
Install / Use
npx skills add OpenMOSS/MOSS-TTSInstalls into whichever agent you are using.
README
MOSS-TTS Family
<br> <p align="center"> <img src="./assets/OpenMOSS_Logo.svg" height="70" align="middle" /> <img src="./assets/mosi-logo.png" height="50" align="middle" /> </p> <div align="center"> <a href="https://trendshift.io/repositories/22854" target="_blank"><img src="https://trendshift.io/api/badge/repositories/22854" alt="OpenMOSS%2FMOSS-TTS | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a> </div> <div align="center"> <a href="https://clawhub.ai/luogao2333/moss-tts-voice"><img src="https://img.shields.io/badge/🦞_OpenClaw-Skills-8A2BE2" alt="OpenClaw"></a> <a href="https://huggingface.co/collections/OpenMOSS-Team/moss-tts"><img src="https://img.shields.io/badge/Huggingface-Models-orange?logo=huggingface&"></a> <a href="https://www.modelscope.cn/collections/openmoss/MOSS-TTS"><img src="https://img.shields.io/badge/ModelScope-Model-7B61FF?logo=modelscope&logoColor=white"></a> <a href="https://mosi.cn/#models"><img src="https://img.shields.io/badge/Blog-View-blue?logo=internet-explorer&"></a> <a href="https://arxiv.org/abs/2603.18090"><img src="https://img.shields.io/badge/Arxiv-2603.18090-red?logo=Arxiv&"></a><a href="https://studio.mosi.cn"><img src="https://img.shields.io/badge/AIStudio-Try-green?logo=internet-explorer&"></a> <a href="https://studio.mosi.cn/docs/moss-tts"><img src="https://img.shields.io/badge/API-Docs-00A3FF?logo=fastapi&"></a> <a href="https://x.com/Open_MOSS"><img src="https://img.shields.io/badge/Twitter-Follow-black?logo=x&"></a> <a href="https://discord.gg/Ahu78PH4p"><img src="https://img.shields.io/badge/Discord-Join-5865F2?logo=discord&"></a> <a href="./assets/wechat.jpg"><img src="https://img.shields.io/badge/WeChat-Join-07C160?logo=wechat&logoColor=white" alt="WeChat"></a> <a href="./assets/lark.png"><img src="https://img.shields.io/badge/Lark-Join-3370FF" alt="Lark"></a>
</div>MOSS‑TTS Family is an open‑source speech and sound generation model family from MOSI.AI and the OpenMOSS team. It is designed for high‑fidelity, high‑expressiveness, and complex real‑world scenarios, covering stable long‑form speech, multi‑speaker dialogue, voice/character design, environmental sound effects, and real‑time streaming TTS.
News
- 2026.6.18: 🚀 MOSS-TTS-Local-Transformer-v1.5 receives Day-0 support in SGLang-Omni — the first inference backend to support the
MossTTSLocalarchitecture, with an OpenAI-compatible/v1/audio/speechendpoint, streaming, and voice cloning. See the cookbooks:moss_tts_local,moss_tts. - 2026.6.18: 🚀 Released MOSS-TTS-Local-Transformer-v1.5, a 4B
MossTTSLocalcheckpoint that inherits all v1.5 features (language tags, stable cloning, explicit pause control, etc.), scales the backbone from Qwen3-1.7B to Qwen3-4B, and uses MOSS-Audio-Tokenizer-v2 for native 48 kHz stereo output. - 2026.6.7: 🚀 Released MOSS-Audio-Tokenizer-v2, natively supporting 48 kHz stereo input and output. Check out the MOSS-Audio-Tokenizer repository for more details!
- 2026.6.2: 🚀 vLLM-Omni now supports the full MOSS-TTS series (
MossTTSDelay,MossTTSRealtime, andMossTTSNanoarchitectures), including MOSS-TTS-v1.5, MOSS-TTS, MOSS-TTSD, MOSS-SoundEffect, MOSS-VoiceGenerator, MOSS-TTS-Realtime, and MOSS-TTS-Nano. See the recipe and examples. - 2026.5.26: 🚀 Released MOSS-SoundEffect-v2.0, a new text-to-audio model using a DiT backbone with the Flow Matching objective, generating 48 kHz bilingual sound effects up to 30 seconds — see
moss_soundeffect_v2/. - 2026.5.26: 🚀 Released MOSS-TTS-v1.5, with stronger multilingual synthesis when language tags are provided, more stable voice cloning, better long-reference short-text cloning, punctuation-following prosody, and explicit pause control via
[pause X.Ys]. - 2026.5.6: 🚀 MOSS-TTS and MOSS-Audio-Tokenizer now support
mlx-audio. Visit the mlx-audio GitHub repository for details. - 2026.4.29: 📝 MOSS-TTS 2.0 is coming soon! We are collecting TTS feedback, suggestions, and feature requests via the requirements collection form.
- 2026.4.13: 🚀 MOSS-TTS-Nano, our ~100M-parameter model, is now available! It supports multilingual voice cloning, 48 kHz stereo input/output, and streaming output on just 4 CPU cores. Check the GitHub repository and our blog for more details.
- 2026.3.31: 📄 Our technical reports for MOSS-TTSD and MOSS-VoiceGenerator are now available on arXiv!
- 2026.3.26: 📘 Added a tutorial on fine-tuning the MOSS-TTS-Realtime!
- 2026.3.20: 📄 Our technical report is now available on arXiv!
- 2026.3.18: 🚀 Added a first-class MOSS-TTS
llama.cppimplementation in the companion repositoryOpenMOSS/llama.cpp, including end-to-end docs and a runnable pipeline for GGUF backbone inference plus ONNX audio codec decoding. See the first-class e2e guide. - 2026.3.16: 📘 Added a tutorial on fine-tuning the MossTTSLocal architecture, suitable for MOSS-TTS-Local-Transformer!
- 2026.3.12: 🚀 Added SGLang backend support for the
MossTTSDelayarchitecture, enabling efficient inference for MOSS-TTS (Delay) and MOSS-SoundEffect, with around 3× faster generation throughput! - 2026.3.11: 📘 Added a tutorial on fine-tuning the MossTTSDelay architecture, suitable for MOSS-TTS(Delay), MOSS-TTSD, MOSS-VoiceGenerator, and MOSS-SoundEffect!
- 2026.3.10: ⚡️ Significantly optimized the VRAM usage of llama.cpp inference pipeline. Now 8B model fits onto 8GB GPUs!
- 2026.3.4: 🚀 Added PyTorch-free inference support — enabling lightweight on-device deployment via llama.cpp + ONNX Runtime. Quantized GGUF weights are released at OpenMOSS-Team/MOSS-TTS-GGUF, and the ONNX audio tokenizer is available at OpenMOSS-Team/MOSS-Audio-Tokenizer-ONNX. See the llama.cpp backend for details.
- 2026.3.4: 🎉 We add MOSS-TTS skills in ClawHub of 🦞 OpenClaw: feishu-voice-tts and moss-tts-voice.
- 2026.2.10: 🎉🎉🎉 We have released MOSS-TTS Family. Check our Blog for more details! Our Huggingface Space is here: MOSS-TTS, MOSS-TTSD-v1.0, MOSS-VoiceGenerator.
Demo
<div align="center"> <video src="https://gist.github.com/user-attachments/assets/fdce9f66-20ec-45e8-9615-89606ae2fbe8" width="70%" poster=""> </video> </div>Contents
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