Annoy and ScaNN are two good options - ScaNN is too new to have solved your previous problem, but Annoy would have been great. - https://github.com/spotify/ann

Annoy and ScaNN are two good options - ScaNN is too new to have solved your previous problem, but Annoy would have been great. - https://github.com/spotify/annoy https://github.com/spotify/annoy - https://ai.googleblog.com/2020/07/announcing-scann-efficient-vector.html?m=1 https://ai.googleblog.com/2020/07/announcing-scann-efficient...