Is Grep All You Need? Grep vs Vector Retrieval for Agentic Search
A new study titled "Is Grep All You Need?" challenges the default reliance on vector retrieval for agentic search by comparing it against the traditional grep tool. Experiments using the LongMemEval benchmark showed that grep often outperformed vector retrieval, especially when irrelevant context was introduced. The research emphasizes that the agent's harness and tool-calling style significantly impact performance more than the retrieval algorithm itself. AI
IMPACT Suggests simpler, cheaper retrieval methods may suffice for agentic search, potentially reducing infrastructure costs.