To be fair Wikipedia has over 60 million pages and this is for 300+ languages. But yeah, the value shows that they might not be using the cheapest service out there.
A tool that (hopefully) surfaces interesting HN discussion threads; I wanted an excuse to investigate (hybrid) full text and vector search at a substantial scale beyond toy datasets.
Sadly (well not really) I changed jobs soon after building the first version. Life caught up and I never got around to adding more features and polishing up the frontend (eg. the broken back button