In the “farewell” letter, the creator of searchcord recommends “Answer Overflow.” I haven’t tried it, but it’s opt-in so it’s probably a lot smaller than searchcord was. Also if you’re fine with building your own search engine, there is a dataset (I think 2 tb uncompressed and like 116 gb compressed) floating around out there with ~ 2 billion discord messages in it, which would be about 1/32 the size of searchcord I think. If you did do that, I would be interested in hearing how well it works.

There is an article you would probably be interested in reading located at: https://archive.org/details/search-timeline

There are strange details around the shutdown of searchcord as well. Would you like to hear about them?