This site keeps track of them:
https://github.com/erikbern/ann-benchmarks#glove-100-angular
ScaNN is currently SOTA: https://ai.googleblog.com/2020/07/announcing-scann-efficient...
ScaNN is currently SOTA: https://ai.googleblog.com/2020/07/announcing-scann-efficient...
Also, most search use cases have requirements besides just the "get_k_nearest" functionality too (scoring-level filtering, business logic built into scoring unrelated to similarity, disparate query patterns that don't fit nicely into a single similarity space), so unless you only need to retrieve the K most-similar documents it might not be a good solution.