Argos Translate vs OPUS-MT (Marian NMT)
Self-host pick — both replace DeepL (Machine translation API).
Both Argos Translate and OPUS-MT (Marian NMT) self-host as a replacement for DeepL (Machine translation API). Pick Argos Translate if you want the lighter footprint — 5min `pip install argostranslate` + download models, $0 on a workstation; ~$10/mo for a small vps for batch jobs. Pick OPUS-MT (Marian NMT) if you need research, low-resource language pairs, and teams that want to fine-tune translation models for a specific domain — 30min — pull Marian + a model from Hugging Face and $15-50/mo vps — marian is c++ and fast, but gpu helps for throughput.
| Argos Translateopen-source | OPUS-MT (Marian NMT)open-source | |
|---|---|---|
| License | MIT | MIT |
| Setup time | 5min `pip install argostranslate` + download models | 30min — pull Marian + a model from Hugging Face |
| Monthly cost | $0 on a workstation; ~$10/mo for a small VPS for batch jobs. | $15-50/mo VPS — Marian is C++ and fast, but GPU helps for throughput. |
| GitHub | argosopentech/argos-translate | Helsinki-NLP/Opus-MT |
| Replaces | DeepL | DeepL |
Good fit for
Argos Translate
Batch translation pipelines (subtitle files, document translation jobs) where you don't need an HTTP service.
Weak at:No HTTP API by default; you build the service layer if you need one (or use LibreTranslate).
OPUS-MT (Marian NMT)
Research, low-resource language pairs, and teams that want to fine-tune translation models for a specific domain.
Weak at:Bring your own service layer; quality varies by pair (well-resourced pairs are excellent, others vary).
In a terminal? npx -y github:SolvoHQ/os-alt-cli deepl prints DeepL's self-host options including both —
how the CLI works →
FAQ
Which is easier to self-host, Argos Translate or OPUS-MT (Marian NMT)?
Argos Translate: 5min `pip install argostranslate` + download models. OPUS-MT (Marian NMT): 30min — pull Marian + a model from Hugging Face.
What does each cost to run?
Argos Translate: $0 on a workstation; ~$10/mo for a small VPS for batch jobs.. OPUS-MT (Marian NMT): $15-50/mo VPS — Marian is C++ and fast, but GPU helps for throughput.. Both projects are free and open source.
Do Argos Translate and OPUS-MT (Marian NMT) replace the same SaaS?
Yes — both are open-source alternatives to DeepL.