Kagi works for me in other languages, but only if I explicitly switch it from "International" to a specific country search. Otherwise it tends to default US results.
Even when you do that, it heavily prefers English content. Whenever I search for some hardware for example, there are several non country related results on the first page. The first 2-3 usually from the selected country, after that it’s not that great.
When I search for “sony wh1000xm5” for example, then the first 2 are from Hungary, the 3rd are a generic English sony.com page, the 4th from the country, all the others is in English and not related to the selected country at all. Austria is a little bit better, it still has generic English results, but mostly it just ignores the differences between Germany and Austria. It’s a huge pain point when you want to buy something.
I live in Bulgaria and even google is pretty bad at this, however adding the Bulgarian word for price at the end of it always worked for me both in kagi and in google
