llama_index

Easiest and laziest way for building multi-agent LLMs applications.

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

A lightweight, powerful framework for multi-agent workflows

Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.