via “rag-based knowledge base retrieval with semantic search and hybrid ranking”
FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive s
Unique: Combines semantic search with BM25 keyword matching and optional re-ranking in a single retrieval pipeline, with automatic chunk management and hierarchical dataset organization. Integrates directly into workflow nodes for seamless context injection into LLM prompts.
More integrated than standalone RAG libraries (LangChain, LlamaIndex) because retrieval is a first-class workflow node with built-in chunk management, re-ranking, and source attribution rather than a library you compose yourself.