LangChain

LangChain is an open-source framework introduced by Harrison Chase in 2022 for building language-model applications.

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LangChain is an open-source framework for building large-language-model applications, introduced by Harrison Chase in 2022. It provides components for connecting models with external data sources and tools in Python and JavaScript/TypeScript.

It is used in applications such as retrieval-augmented generation (RAG), which incorporates retrieved material into generated answers.

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…ows, long-running loops and microservice orchestration with persistent state, and it works with agents built on LangChain, the OpenAI Agents SDK or custom SDKs.


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