Haystack alternatives
6 rag tools in the same lane as Haystack, ranked by editorial score.
LL
LlamaIndex
FeaturedRAG · BYO (Claude / GPT / open)
8.7
Data framework for connecting LLMs to your data.
Freemium· Free open-source; LlamaCloud paidRAGdata ingestion
LC
Langchain-Chatchat
RAG · Multi-model (GLM-4, Qwen2, Llama 3, etc. via Xinference/Ollama/LocalAI/FastChat)
7.4
Self-hostable RAG and agent framework that wires LangChain to any local open-source LLM and a knowledge base.
Free· Apache-2.0 open source; self-hosted, infra costs onlyprivate-knowledge-baseoffline-rag
QU
Quivr
RAG · Multi-model (OpenAI, Anthropic, Mistral, Gemma)
8.4
Open-source RAG framework for building custom AI assistants over your own documents in a few lines of Python.
Free· Open source (pip install quivr-core); pay only for LLM/vector-store usagedocument-qacustom-knowledge-base
RB
RAGs by LlamaIndex
RAG · Multi-model (OpenAI, Anthropic, Replicate, HuggingFace)
7.0
Open-source Streamlit app that builds a custom RAG pipeline from a natural-language brief.
Free· Free, MIT-licensed; bring your own model/API keysnatural-language-rag-builderdocument-qa
RA
RAGFlow
RAG · Multi-model
8.1
Open-source RAG engine with deep document parsing, hybrid search, and visual agent orchestration.
Freemium· Free tier; Starter $29/mo; Pro $129/mo; Enterprise customdocument-qaenterprise-search
AG
Agentset
RAG · Multi-model (Claude, OpenAI, Google, xAI, Cohere, Mistral, DeepSeek)
7.3
Production-ready RAG infrastructure with agentic search, citations, and model-agnostic plumbing.
Freemium· Free: $0 · Pro: $49 · Enterprise: Customdocument-qaagentic-search