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LangChain

The open-source framework for building and deploying reliable, data-aware Large Language Model (LLM) applications.

LangChain is the essential framework for engineering LLM-powered applications: it simplifies connecting models (like GPT-4 or Claude) to external data, computation, and APIs. The platform provides a modular set of components—Chains, Agents, Tools, and Memory—allowing developers to quickly build complex workflows like Retrieval-Augmented Generation (RAG) pipelines and sophisticated conversational agents. Its Python and JavaScript libraries, combined with LangChain Expression Language (LCEL), offer a standardized interface for rapid prototyping and moving applications to production with confidence.

https://www.langchain.com/

What builders pair with LangChain

Projects using both technologies. Select a pairing to see a project.

12 more pairings

Pairing: GPT-4

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Failing Fast with AI: Rapid Prototyping Using Google AI Studio

Pereira · February 26, 2026

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