[You're right](https://github.com/pgvector/pgvector/blob/0ce497a1b177709bc49ff8bd2f3e641fe3fd13cd/README.md?plain=1#L191)! Thanks for bringing it to my attention. I wasn't even aware of that extension. 

I've been disappointed by pg's fts in the past so I didn't consider using pg for this, but we could make better use of the embeddings if they were in pg. 



shyfire

We like using OpenSearch for search stuff so we store them there. I’m not sure if Postgres supports k-nn in arbitrary dimensions.