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LlamaIndex
46
Stack Score
Editorial pick✓ Verified working
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LlamaIndex

Data framework for LLM apps with RAG focus.

Try LlamaIndex✓ Free trial available

Best for

Best for AI engineering teams building production RAG + knowledge agents.

At a glance

Pricing
freemium
Setup time
4 hours
Learning curve
moderate
Last verified
5/26/2026

What we love

  • ✓Best RAG framework
  • ✓Wide data-connector library
  • ✓OSS + managed options

Where it falls short

  • −API evolves quickly
  • −Best with engineering team
  • −Cloud tier pricing climbs

Pricing

✓ Pricing verified Jun 21, 2026

2 tiers

OSS

$0

perpetual

  • ✓MIT

LlamaCloud

Usage

per request

  • ✓Hosted parsing + retrieval

Overview

LlamaIndex is the leading data framework for LLM apps — RAG, knowledge agents, structured data extraction. OSS Python + TypeScript + managed cloud.

Key features

  • ●RAG-first data framework
  • ●100+ data connectors
  • ●Structured extraction
  • ●Agent workflows
  • ●Managed cloud (LlamaCloud)

Best use cases

Production RAG

Build production RAG with curated data connectors + chunking.

Knowledge agents

Build agents that query enterprise knowledge bases reliably.

Integrations

Python
TypeScript
OpenAI
Anthropic
Pinecone
Weaviate

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