PageIndex alternatives
6 rag tools in the same lane as PageIndex, 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
VE
Vectara
RAG · In-house Boomerang (retrieval) and Mockingbird (generation) plus BYOM for GPT, Claude, Gemini, and open-weight LLMs
Enterprise agent platform with built-in retrieval, grounding, and hallucination controls
Enterprise· SaaS: $100K/ year · VPC: $250K/ year · On-prem: $500K/ yearEnterprise knowledge-base searchGrounded customer-support chatbots
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
KO
Kotaemon
RAG · Multi-model (OpenAI, LlamaCPP, any OpenAI-compatible endpoint)
7.0
Open-source RAG UI for chatting with your own documents, locally or self-hosted.
Free· Free, open-source (MIT-style); self-hosted infrastructure costs onlydocument-qaprivate-rag
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