[violet13]

It sounds like an impressive list, but many of these are ghost towns and are of little value to machine learning. Wikiversity is a mess... Wikipedia is the crown jewel and probably the only thing of unique commercial value for ML.

[grape_surgeon]

Disagree, this is too dismissive. Commons, Wikidata, and Wiktionary are all useful. Especially Wiktionary; probably one of the best online dictionaries imo. Often has a lot of unique info that's hard to find even in dictionaries, very good etymologies. All useful in ML.

[emw]

Wikipedia indeed seems the most valuable for ML, by far. Wikidata, Wikimedia Commons, and Wiktionary also seem useful there.

[resolutebat]

Wikivoyage is underrated and that was not helped by the acrimonious split with Wikitravel (which was acquired a predatory marketing company), but it finally seems to be pulling ahead.

[hehdhdjehehegwv]

One of my favorite LLM applications is getting them to write wikidata queries. The data is amazing, but the query language is nothing but pure hell.