| ISO 639-3 | art-001 |
| kpi | |
| ISO 639-3 Reference Names | art-289 | Kofei |
| ISO 639-3 Print Names | art-290 | Kofei |
| ISO 639-3 Inverted Names | art-291 | Kofei |
| Ethnologue Primary Language Names | art-323 | Kofei |
| Glottolog Languoid Names | art-326 | Kofei |
| Glottocode | art-327 | kofe1239 |
| Glottolog Primary Key | art-328 | 34388 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 2543 |
| Ethnologue Language Names | art-330 | Kofei |
| English | eng-000 | Kofei |
| français | fra-000 | kofei |
| español | spa-000 | kifei |