Picking a vector database can be hard. Scalability, latency, costs, and even compliance hinge on this choice. For those navigating this terrain, I've embarked on a journey to sieve through the noise and compare the leading vector databases of 2023. I’ve included the following vector databases in the comparision: Pinecone, Weviate, Milvus, Qdrant, Chroma, Elasticsearch and PGvector. The data behind the comparision comes from ANN Benchmarks, the docs and internal benchmarks of each vector database and from digging in open source github repos.