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LlamaIndex

Data framework for LLM applications

4.0(219 reviews)freemium
free tieropen sourceapi access

Open-source framework for building LLM applications over custom data with RAG, agents, and workflow orchestration.

Pros

  • Best RAG framework available
  • Extensive data connector library
  • Both Python and TypeScript

Cons

  • Developer-only framework
  • Rapid API changes

Best For

Developers building production RAG applications and LLM-powered data pipelines

Pricing

Free

Free
  • Core features
  • Email support

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