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RAG Frameworks

Open-source and commercial frameworks for building RAG pipelines for financial documents — LangChain, LlamaIndex, Haystack, and DSPy reviewed for finance use cases.

4 tools

Open SourceOpen Source

LangChain

Most widely adopted RAG framework with 90k+ GitHub stars, LCEL, and LangGraph for building financial RAG pipelines.

✓ Largest community and ecosystem of any RAG framework

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Open SourceOpen Source

LlamaIndex

Purpose-built RAG framework with LlamaParse for financial PDF parsing and advanced document indexing techniques.

✓ Best-in-class document parsing for financial PDFs

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Open SourceOpen Source

Haystack

Production-ready RAG framework for regulated industries with pipeline architecture and on-premise deployment.

✓ Strong data governance and compliance features

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Open SourceOpen Source

DSPy

Stanford NLP framework for programmatic LLM pipeline optimization and self-optimizing RAG without manual prompting.

✓ Eliminates manual prompt engineering

openaianthropiccohere

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