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LangChain vs LlamaIndex vs Flowise: Top LLM Frameworks Compared

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Cons Steep Learning Curve : Can be overwhelming for beginners due to its depth and syntax. Structured Indexing : Supports multiple index types (tree, vector, keyword), chunking strategies, and schema customization. LangChains flexibility has been applied to automating legal contract review, where it scans PDFs for key clauses.