Are published ANN-Benchmarks DBMS results trustworthy?

ANN (Approximate Nearest Neighbor) search is a crucial part of any AI infrastructure. It dramatically enhances the capabilities of LLMs with RAG (Retrieval-Augmented Generation). Initially, there were specialized vector databases optimized for ANN. Now, practically all database management systems provide this functionality, including general-purpose ones like PostgreSQL , MariaDB , and YDB , to name just a few. That’s why performance comparison is essential: you need to know which DBMS delivers the best per