Retrieval-augmented generation: a model answers from documents fetched for the question instead of from memory alone. Named by Lewis et al., Facebook AI Research: Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks (May 22, 2020). Also called Retrieval-augmented generation, RAG pipeline, GraphRAG, Agentic RAG.
Index 0 to 100, monthly
Signals
Signal
Value
Reads as
Hacker News stories, last 12 months592 stories, -5% on the 12 months before
592 stories, -5% on the 12 months before
Adoption
arXiv papers, last 12 months2,754 papers, +20% on the 12 months before
infiniflow/ragflowRAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a · Dec 12, 2023 2y2 years ago
Dec 12, 20232y2 years ago
91,276
HKUDS/LightRAG[EMNLP2025] LightRAG: Simple and Fast Retrieval-Augmented Generation · Oct 2, 2024 1y1 year ago
Oct 2, 20241y1 year ago
39,844
microsoft/graphragA modular graph-based Retrieval-Augmented Generation (RAG) system · Mar 27, 2024 2y2 years ago
Mar 27, 20242y2 years ago
36,094
NirDiamant/RAG_TechniquesThis repository showcases various advanced techniques for Retrieval-Augmented Generation (RAG) systems. Each technique has a detailed notebo · Jul 13, 2024 2y2 years ago
Jul 13, 20242y2 years ago
29,593
SciPhi-AI/R2RSoTA production-ready AI retrieval system. Agentic Retrieval-Augmented Generation (RAG) with a RESTful API. · Feb 12, 2024 2y2 years ago
Feb 12, 20242y2 years ago
8,004
Azure-Samples/azure-search-openai-demoA sample app for the Retrieval-Augmented Generation pattern running in Azure, using Azure AI Search for retrieval and Azure OpenAI large lan · Feb 8, 2023 3y3 years ago
Vector databasesDatabases that store embeddings and find the nearest ones fast, the retrieval layer under RAG and semantic search.
Peak
AI agentsModels that plan and act in steps, calling tools and other services until a task is done.
Peak
Context engineeringDeciding what goes into a model's context window, and in what order: instructions, retrieved documents, tools and memory.
Plateau
AI searchSearch that answers with a written summary and citations instead of ten blue links, and the deep research agents that followed.
Peak
History
Date
What changed
Sep 24, 2026
Tracking started: emerged May 2020, plateau, 4 other names recorded
Sources: Curve: Hacker News story titles, Wikipedia pageviews and arXiv papers by month, refreshed Sep 24, 2026. Related entities from the fru.dev sites' public APIs, matched by name. How stages work.
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