Google Translate does not offer Kichwa. This translator asks Google for Quechua, the closest language it does offer, and then rewrites that into Kichwa with a documented set of rules: word swaps, sound changes and grammar. It is a rule-based rewrite, not a human translation, so check anything that matters with a speaker.
37.6 on 300 real sentences; Google's Quechua as is: 31.7.
The score is chrF: how closely the output matches what real Kichwa speakers wrote, character by character, from 0 to 100. Tested on 300 held-out sentences of Killkan, a Kichwa radio drama dubbed from Spanish (CC BY 4.0).
Unified Ecuadorian Kichwa from Google's Southern Quechua: spelling, suffixes, common words.
The rules are a plain file anyone can read, test and copy. Every translation shows Google's Quechua underneath, so you can see exactly what the rules changed.
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