Writing and content
DeepL Pro alternatives
2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.
The projects
OpenNMT/OpenNMT-py★7,012 GitHub starsMIT licenceEnd-to-end neural machine translation framework that trains and serves translation models via Python.Open on GitHub ↗marian-nmt/marian★1,466 GitHub starslicence unclearHigh-performance C++ neural machine translation engine for training and fast inference of translation models.Open on GitHub ↗
What you give up either way
- Proprietary model quality trained on DeepL’s private corpora
- Translation quality improvements from proprietary expert-labeled data
- Enterprise polish: large-scale reliability, SSO & advanced team administration out of the box
- Voice/real-time meeting translation features
An open-source project doing the core job proves a replacement is possible. It does not prove it matches DeepL Pro, and it does not prove anyone has run it for a month. How we decide.


