There is no memory overhead, in that everything resides on disk/in the sqlite database, and is read from there on demand. That said, sqlite for blob storage is

There is no memory overhead, in that everything resides on disk/in the sqlite database, and is read from there on demand. That said, sqlite for blob storage is a bit inefficient, so the next version will use tightly packed structs on disk. I also managed to finetune an embedding down to 96d, so in the coming version the storage for the index is getting close to parity with the size of the text being indexed.