Monday, May 05, 2025

AI tool: LangChain.js & LangChain (Python)

LangChain @GitHub (MIT license)

Build context-aware, reasoning applications with LangChain’s flexible abstractions and AI-first toolkits.

Core OSS libraries:
LangChain and LangChain.js - reusable components and integrations for building LLM applications
LangGraph and LangGraph.js - build LLM agents as graphs


LangChain is a software framework that helps facilitate the integration of large language models (LLMs) into applications. As a language model integration framework, LangChain's use-cases largely overlap with those of language models in general, including document analysis and summarizationchatbots, and code analysis.


Products:
LangSmith - platform for building and monitoring production-grade LLM applications
LangGraph Platform - infrastructure for deploying LangGraph agents






by Alex Dan

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