Translation

OPUS-MT (MarianMT)

More than a thousand small translators, each for its own language pair. Russian-English and back are available. Fast even on a regular CPU.

Developer
Helsinki-NLP, University of Helsinki, Finland
First release
Apr 2020
Latest release
Apr 2026
Sizes
25M – 240M
License
Commercial use allowedApache 2.0 or CC-BY 4.0 (depends on the language pair)
Russian
Supported
Running
On your own serverAlso runs without a GPU
Industries
Documents and accounting, Customer support, Retail and marketplaces
Deploy on your server Hugging Face GitHub

What it does

  • Bulk translation of short texts
  • Translation right on the server without a GPU
  • Translating reviews and requests before analysis

Where it is used

Online stores and marketplacesCustomer supportAnalytics

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
no versions
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. OPUS-MT tiny (сверхмалые модели)
  2. OPUS-MT tc-big (большие модели по группам языков)
  3. Первые модели OPUS-MT (в том числе en-ru, ru-en)

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 OPUS-MT (MarianMT) be used in a commercial project?

Yes. License: Apache 2.0 or CC-BY 4.0 (depends on the language pair). It allows commercial use, but it is still worth having a lawyer review the license before launch.

What hardware does OPUS-MT (MarianMT) 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 OPUS-MT (MarianMT) support Russian?

Yes, Russian is listed on the model card.

Where can I download OPUS-MT (MarianMT) and what does it cost?

The OPUS-MT (MarianMT) 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

TranslationM2M-100Meta · USACommercial use allowed

An early Meta translator that translates directly between 100 languages, without English in the middle. Russian is supported. Old, but light and permissively licensed.

DetailsTranslationMADLAD-400Google · USACommercial use allowed

Google's translator for more than 400 languages under a permissive license. Russian is supported. A good substitute for NLLB when commercial use is needed.

DetailsTranslationHunyuan-MT / Hy-MTTencent · ChinaCommercial use with conditions

Tencent translators for 33 languages; the first version won the WMT25 competition. Russian is supported. The small 1.8B version runs on a laptop; the new Hy-MT2 is under Apache 2.0.

Details

Source: huggingface.co/Helsinki-NLP/opus-mt_tiny_eng-ita. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.