EDUCATION & TRAINING
Pinecone vs Qdrant vs pgvector vs Turbopuffer: RAG Vector DB Pick
Dev.to Machine Learning
About This Tutorial
Why your vector DB choice matters in 2026 For the first eighteen months of the retrieval-augmented generation era, the quality bottleneck sat firmly inside the language model. If your answers were wrong, the cure was a better model, a longer context window or a smarter prompt. That diagnosis no longer holds. By Q1 2026, with Claude 4.6, GPT-5.2 and Gemini 2.5 all clearing the same evaluation thresholds within a few percentage points of each other, the bottleneck has moved decisively upstream.