Umbundu translation models umb

2 models into Umbundu, 1 from Umbundu. Best scored into Umbundu: English to Umbundu (chrF++ 21.2). Best scored from Umbundu: Umbundu to English (chrF++ 18.8).

Which open models work for Umbundu?

Windy Translate lists 2 open translation models into Umbundu and 1 from Umbundu. All of them can be downloaded from Hugging Face and run on your own hardware. By licence: 3 Apache-2.0 (terms and attribution text: licensing). 3 of them have a screening score on FLORES-200. The best scored into Umbundu is translate-en-umb (chrF++ 21.2, Limited). The best scored from Umbundu is translate-umb-en (chrF++ 18.8, Limited).

With English. English to Umbundu: translate-en-umb (chrF++ 21.2, Limited). Umbundu to English: translate-umb-en (chrF++ 18.8, Limited). To translate between Umbundu and a language with no direct model, you can go through English with these two.

By band, the scored Umbundu models are 3 Limited (Excellent is chrF++ 60 or more, Good 45 to 60, Usable 30 to 45, Limited 15 to 30). A score is a 48-sentence screening of news and encyclopedia text, not a measure of accuracy, and a difference of a point or two is noise. How we measured.

Speech-to-text. No speech model here covers Umbundu: there is no dedicated model, and Whisper's tokenizer does not list the language.

Each model page has a short snippet to download and run the model yourself, its licence and attribution text, and its score where there is one. Pick the best scored model for your direction, then try it on a few sentences of your own text: a screening score is a starting point, not a guarantee.

Into Umbundu

From Umbundu

Scores: chrF++ on FLORES-200 dev, 48 sentences, measured 2026-08-04. Method.