These tools competes with

LlamaIndexvsHaystack

Data framework for RAG and LLM pipelines versus Composable NLP and LLM pipeline framework

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Choose LlamaIndex when…

  • You're building RAG or knowledge base apps
  • Structured data querying over documents is your focus
  • You need powerful index and retrieval primitives

Choose Haystack when…

  • You're building search-first or RAG pipelines in Python
  • Deepset's enterprise search DNA fits your use case
  • You need flexible document processing pipelines

Side-by-side comparison

Field
LlamaIndex
Haystack
Category
Pipelines & RAG
Pipelines & RAG
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
deepset Cloud: Custom
GitHub Stars
37,000
18,000

LlamaIndex

Framework specialized in data ingestion, indexing, and retrieval for LLM applications. The go-to for complex RAG pipelines.

Haystack

deepset's open-source framework for building production NLP and LLM pipelines. Strong focus on RAG, search, and document AI use cases.

Shared Connections3 tools both integrate with

Only LlamaIndex (13)

CursorLangGraphChromapgvectorWeaviateLangfuseLiteLLMOllamaRAGASOpenAI API

Only Haystack (1)

LlamaIndex

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