Speech to textText to speech

MMS (Massively Multilingual Speech)

Meta speech models covering more than a thousand languages. The supported list includes Bashkir, Tatar, Chuvash, Sakha, Ossetian, Chechen, Avar, Udmurt, Mari, Erzya, Moksha, Kalmyk and Karelian. Quality varies a lot by language, so test it on your own recordings.

The last open version came out in Sep 2023. The family has not been updated for a long time: the model still works, but do not expect fixes or new sizes.

Developer
Meta AI, USA
First release
May 2023
Latest release
Sep 2023
Sizes
300M – 1B
License
Non-commercial onlyCC-BY-NC 4.0 — non-commercial use only
Russian
Supported
Running
On your own serverAlso runs without a GPU
Industries
Media and production, Public sector, Education, Customer support
Deploy on your server Hugging Face GitHub

What it does

  • Transcribing audio and video in rare languages
  • Reading text aloud in a national language
  • Detecting which language a recording is in
  • A base for fine-tuning to one specific language

Where it is used

Media, archives and librariesGovernment and municipal bodiesEducation and language preservation

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. MMS-TTS, отдельные модели синтеза по языкам
  2. MMS-LID, определение языка записи
  3. MMS-1B-all, распознавание речи

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 MMS (Massively Multilingual Speech) be used in a commercial project?

No. License: CC-BY-NC 4.0 — non-commercial use only. A commercial product needs a different model or a separate agreement with the rights holder.

What hardware does MMS (Massively Multilingual Speech) 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 MMS (Massively Multilingual Speech) support Russian?

Yes, Russian is listed on the model card.

Where can I download MMS (Massively Multilingual Speech) and what does it cost?

The MMS (Massively Multilingual Speech) 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.

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Details

Source: huggingface.co/facebook/mms-1b-all. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.