Translation into South African languages, ready for the proofreader.
Marito translates textbooks, workbooks, exam papers and memoranda, curriculum documents and public information. It reasons about the source, translates, then post-edits its own draft before a language editor takes over.
Any direction among Sepedi, Sesotho, Setswana, Tshivenḓa, Xitsonga and English.
Sepedi
marito-sepedi-pro-1.0- Names kept
- Numbers kept
- Layout kept
- Correct curriculum term
- Spelling errors per 1,000 words
- Words from another language
English into each language, 300 passages per language. On a full 28-page examination memorandum, of sentences passed with proofreading only.
Built for formal published text
Marito is made for learning materials, examinations, curriculum documents, notices, forms and public information. It follows the Departmental standard for spelling and curriculum terminology, using the Marito Dictionaries.
Layout stays put
Send text or Markdown, from one sentence to a whole document. Layout, numbering and figures are kept in place.
Your glossary wins
Terms you supply override the model's own, so a long document uses the same word every time.
Weekly updates
Corrections from users go into the model every week. You can ask for a fixed version if you need one.
Made for editors, not instead of them
Marito gets the draft most of the way. A language editor proofreads it, and what the editor changes feeds the next update.
Marito Pro translates
It reasons about the source, translates, then post-edits its own draft against the source.
A language editor proofreads
The editor checks the draft against the points listed below.
Corrections flow back
Every correction sent back goes into the next weekly update.
Tested on passages the models never saw in training
First-language reviewers scored spelling, terminology and borrowed words blind. The figures were measured on the translation before the post-editing pass, so they are a floor for Marito Pro.
Correct curriculum term
Higher is better
Spelling errors per 1,000 words
Lower is better
| Measure | Marito | Gemini 3.8 | Fable | Astra | |
|---|---|---|---|---|---|
| Spelling errors per 1,000 words | 2.0 | 30.1 | 18.2 | 15.4 | 20.7 |
| Correct curriculum term | 93.7% | 59.3% | 70.1% | 72.6% | 66.9% |
| Words from another language | 0.0% | 6.3% | 3.9% | 3.0% | 4.7% |
| English left untranslated | 0.0% | 9.0% | 5.5% | 4.4% | 6.6% |
| Names kept | 98.4% | 82.0% | 89.1% | 90.8% | 87.4% |
| Numbers kept | 99.9% | 93.9% | 95.6% | 96.9% | 95.0% |
| Layout kept | 99.9% | 84.6% | 91.8% | 93.2% | 90.4% |
Same unseen passages for every system, tested 1 to 10 September 2026. The full comparison, including a similarity score against the language teams' publication-standard translations for each language, is in the system card.
of sentences in a complete 28-page examination memorandum were accepted by a language editor with proofreading only, depending on the language. Layout was kept in 99.3% to 100% of cases.
What a language editor should check
Formal text is the models' strength, so check informal passages more closely. These are the points the system card asks editors to look at.
- Names that are also words, and abbreviations replaced by descriptions.
- Terms that drift across a long document. Use a glossary.
- The wrong sense of a word with several meanings.
- Agreement across long sentences.
- Paired words collapsed, such as "panic and fear" becoming "fear and fear".
- Familiar patterns over-applied, such as "29 questions" becoming "29 pages".
- Renumbered or shortened lists in dense memoranda.
- English terms left in place.
- Stray characters from another script, which are rare.
- Register, especially in informal text.