Tag
The article provides an overview of 20 advanced RAG (Retrieval-Augmented Generation) types expected to be relevant in 2026, covering long-document memory, adaptive retrieval, multimodal grounding, multilingual QA, graph reasoning, and security-focused RAG approaches.
A benchmark comparing vision-capable LLMs (native PDF reading) against OCR-based pipelines on 30 long, image-heavy PDFs finds that OCR with layout extraction still outperforms vision models on chart/table-heavy pages and has a 0% failure rate vs. 7% for native PDF, though the sample size is small and many gaps are within noise.