Would love to chat (ted@nludb.com) if you’re interested in using APIs like this in production. NLUDB is supplying folks with equivalent APIs both as a SaaS and a private cloud install.

If you’re interested in rolling your own, a good place to start is the sentence-transformers Python package along with a KNN search service like Spotify’s Annoy.

Pinecone, of course, looks awesome as well :-)