RAG Is Not Always the Answer Anymore: How AI Agents Search Code in 2026 (opens in new tab)

RAG Is Not Always the Answer Anymore: How AI Agents Search Code in 2026 For the last couple of years, "add RAG" became the default answer to almost every AI product question. Need the model to understand docs? Add RAG. Need it to answer questions over a repo? Add RAG. Need it to stop hallucinating? Add RAG and pray a little. RAG is still useful. I am not here to bury it. But for codebases, the default is changing. Modern AI coding agents do not always need a vector database to find the right ...