Text to speech

MOSS-TTS / MOSS-TTSD

A speech synthesis family: multi-voice dialogue voicing (TTSD), fast synthesis for live conversation and the tiny Nano. Version 1.5 supports 30+ languages, including Russian.

Developer
OpenMOSS (Fudan University), China
First release
Jun 2025
Latest release
May 2026
Sizes
100M – 8.5B
License
Commercial use allowedApache 2.0
Russian
Supported
Running
On your own serverAlso runs without a GPU
Industries
Media and production, Education, Customer support
Deploy on your server Hugging Face GitHub

What it does

  • Voicing podcasts and dialogues
  • Voice for an assistant
  • Voice cloning
  • Multilingual voiceover

Where it is used

Media and podcastsOnline learningVoice bots

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
fits
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. MOSS-TTS v1.5
  2. MOSS-TTS Nano 100M
  3. MOSS-TTS, TTSD v1.0 и Realtime
  4. MOSS-TTSD v0.7
  5. MOSS-TTSD v0

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can MOSS-TTS / MOSS-TTSD be used in a commercial project?

Yes. License: Apache 2.0. It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does MOSS-TTS / MOSS-TTSD need?

At minimum: Laptop or regular PC, up to 8 GB of VRAM — smaller versions. Some versions also run on an ordinary CPU, without a GPU. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does MOSS-TTS / MOSS-TTSD support Russian?

Yes, Russian is listed on the model card.

Where can I download MOSS-TTS / MOSS-TTSD and what does it cost?

The MOSS-TTS / MOSS-TTSD weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

Similar models

Text to speechDiaNari Labs · South KoreaCommercial use allowed

A model that voices entire two-person dialogues with laughter, sighs and pauses. English only.

DetailsSpeech to textVibeVoiceMicrosoft · USACommercial use allowed

Microsoft speech models: long multi-voice dialogue synthesis, fast synthesis for live conversation, and recognition of long recordings split by speaker, including in Russian.

DetailsText to speechHiggs AudioBoson AI · USACommercial use with conditions

Expressive speech and dialogue synthesis with voice cloning, plus recognition models. Version 3 of the synthesis supports about 100 languages, including Russian, but is non-commercial.

Details

Source: huggingface.co/OpenMOSS-Team/MOSS-TTS-v1.5. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.