llamaindex.ai
WebAPI
What is LlamaIndex?
LlamaIndex is an open-source data framework that helps developers load, index, and query private or domain-specific data with large language models — the connective layer commonly used to build retrieval-augmented-generation (RAG) pipelines and AI knowledge agents.
Key features
- Data connectors for 100+ sources
- RAG pipeline building blocks
- Agent and workflow orchestration
Pricing
FreemiumOpen-source SDK (free), LlamaCloud managed tier paid
Verify on the official pricing page →LlamaIndex use cases
- 1Building RAG applications
- 2Connecting LLMs to internal documents
- 3AI knowledge agents
Who is LlamaIndex for?
AI/ML engineersBackend developersData teams
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