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LangChain

GitHub Repo Pretty sure · it works, but painfully
https://github.com/langchain-ai/langchain

The McDonald's of LLM frameworks: omnipresent, reasonably functional, and you'll use it because everyone else does, not because it's the best option.

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LangChain is a wrapper-on-wrappers architecture that abstracts away the complexity of calling LLM APIs by introducing new complexity: learning their abstraction layer. The README promises 'model interoperability' but delivers vendor lock-in to LangChain patterns. Real signal exists (people ship with it), but mostly because the switching cost is high, not because the abstraction is elegant. The ecosystem upsell (LangGraph, LangSmith, LangSmith Deployment) reveals the actual business model: fre...

129598 stars Python 2026-03-15 1245 days old

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