2026 RAG Selection Guide: How to Choose Between Vector, Graph, and Vectorless

This article compares traditional Vector RAG, GraphRAG, and the newer Vectorless RAG, explains why Vector RAG fails on relational and structured queries, presents benchmark results, outlines each architecture's strengths and costs, and offers a decision framework and Adaptive RAG routing strategy for production systems.

Adaptive RetrievalGraphRAGLLM

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2026 RAG Selection Guide: How to Choose Between Vector, Graph, and Vectorless

Fighter's World

Nov 1, 2025 · Artificial Intelligence

What Did OpenEvidence Get Right in High‑Stakes Medical AI?

OpenEvidence’s rapid rise in high‑risk medical AI stems from a trust‑focused system that combines free, evidence‑rich tools, expert‑in‑the‑loop data pipelines, adaptive retrieval, meta‑prompting, and a self‑correcting loop, turning clinicians into empowered research partners while building a defensible commercial moat.

AIAdaptive RetrievalEvidence Retrieval

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What Did OpenEvidence Get Right in High‑Stakes Medical AI?