Hi, because we trained these vectors on Wikipedia, we released models corresponding to the 90 largest Wikipedia first (in term of training data size). More models are on the way, including Irish.

I suspected it was something like this. Unfortunately the Vicipéid is not of very high quality. I just just hope Facebook doesn't forget which side its bread is buttered on.

It would initially seem like an odd oversight as it has Welsh, with half the number of speakers. Another poster said there are more on the way. I wonder if it's a technical or political reason for it not being in the release? They presumably have Irish speakers on staff...

While both Wales and Ireland do have compulsory education in their respective languages, and the number of people who speak Irish is higher, the number of people who speak Welsh every day is considerably higher.

Esperanto is also really easy to add to this kind of service due to a simplified grammar and the community's online presence.