ah sorry, i should read OP better - chroma's default embedding model is sentence transformers - and we have many other integrated - https://github.com/chroma-core/chroma/blob/main/chromadb/uti...

> It would be wonderful if there were a simpler (single file, SQLite or DuckDB like) database for vectors than the complex (and in some cases, unfortunately cloud-based) ones available now.

This is literally chroma!