Benchmarks Show Keyword Search Matches or Beats Vector RAG for Agent Memory Retrieval

A developer benchmarking retrieval for an assistant memory layer found that keyword search achieved 100% recall while vector RAG degraded to 0.839 as user history grew, a counterintuitive result favoring keyword retrieval for fact recall.

2026-09-29 ~ 2026-09-29 · 2 related posts

• Dev Benchmarks Memory Layer vs Vector RAG and Keyword Search: Keyword Tied, Vector RAG Fell — Initial_Orange2985 · 2026-09-29
• Dev benchmark: keyword search hits 1.000 recall while vector RAG drops to 0.839 — Initial_Orange2985 · 2026-09-29