Vector DB Evals in 2026: Weaviate vs pgvector Recall Test
Weaviate vs pgvector, benchmarked honestly: a 2026 recall-controlled test showing real latency at matched recall targets, plus how to pick for your workload.
Chapter 1: Why Vector DB Benchmarks Lie (And What 2026 Changed) Every vector database vendor publishes a benchmark. Every one of those benchmarks shows the vendor winning. This is not a coincidence, and it is not exactly fraud either. It is a structural property of how vector search benchmarks are constructed, and if you do not understand that structure you will pick a database based on a chart that has almost nothing to do with your workload. This guide exists because the weaviate vs pgvector question gets answered badly almost everywhere. You will find blog posts declaring one of them...