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Title: LangChain overview - Docs by LangChain

Open Graph Title: LangChain overview - Docs by LangChain

X Title: LangChain overview - Docs by LangChain

Description: LangChain is an open source framework with a pre-built agent architecture and integrations for any model or tool — so you can build agents that adapt as fast as the ecosystem evolves

Open Graph Description: LangChain is an open source framework with a pre-built agent architecture and integrations for any model or tool — so you can build agents that adapt as fast as the ecosystem evolves

X Description: LangChain is an open source framework with a pre-built agent architecture and integrations for any model or tool — so you can build agents that adapt as fast as the ecosystem evolves

Opengraph URL: https://docs.langchain.com/oss/python/langchain/overview

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Links:

Skip to main contenthttps://python.langchain.com/docs/tutorials/#content-area
Docs by LangChain home pagehttps://python.langchain.com/
Supporthttps://support.langchain.com/
GitHubhttps://github.com/langchain-ai
Try LangSmithhttps://smith.langchain.com/
Try LangSmithhttps://smith.langchain.com/
LangChainhttps://python.langchain.com/oss/python/langchain/overview
LangGraphhttps://python.langchain.com/oss/python/langgraph/overview
Deep Agentshttps://python.langchain.com/oss/python/deepagents/overview
Integrationshttps://python.langchain.com/oss/python/integrations/providers/overview
Learnhttps://python.langchain.com/oss/python/learn
Referencehttps://python.langchain.com/oss/python/reference/overview
Contributehttps://python.langchain.com/oss/python/contributing/overview
Overviewhttps://python.langchain.com/oss/python/langchain/overview
Installhttps://python.langchain.com/oss/python/langchain/install
Quickstarthttps://python.langchain.com/oss/python/langchain/quickstart
Changeloghttps://docs.langchain.com/oss/python/releases/changelog
Philosophyhttps://python.langchain.com/oss/python/langchain/philosophy
Agentshttps://python.langchain.com/oss/python/langchain/agents
Modelshttps://python.langchain.com/oss/python/langchain/models
Messageshttps://python.langchain.com/oss/python/langchain/messages
Toolshttps://python.langchain.com/oss/python/langchain/tools
Short-term memoryhttps://python.langchain.com/oss/python/langchain/short-term-memory
Structured outputhttps://python.langchain.com/oss/python/langchain/structured-output
Overviewhttps://python.langchain.com/oss/python/langchain/middleware/overview
Built-in middlewarehttps://python.langchain.com/oss/python/langchain/middleware/built-in
Custom middlewarehttps://python.langchain.com/oss/python/langchain/middleware/custom
Guardrailshttps://python.langchain.com/oss/python/langchain/guardrails
Runtimehttps://python.langchain.com/oss/python/langchain/runtime
Context engineeringhttps://python.langchain.com/oss/python/langchain/context-engineering
Model Context Protocol (MCP)https://python.langchain.com/oss/python/langchain/mcp
Human-in-the-loophttps://python.langchain.com/oss/python/langchain/human-in-the-loop
Retrievalhttps://python.langchain.com/oss/python/langchain/retrieval
Long-term memoryhttps://python.langchain.com/oss/python/langchain/long-term-memory
LangSmith Studiohttps://python.langchain.com/oss/python/langchain/studio
Testhttps://python.langchain.com/oss/python/langchain/test
Agent Chat UIhttps://python.langchain.com/oss/python/langchain/ui
Deploymenthttps://python.langchain.com/oss/python/langchain/deploy
Observabilityhttps://python.langchain.com/oss/python/langchain/observability
Create an agenthttps://python.langchain.com/docs/tutorials/#create-an-agent
core benefitshttps://python.langchain.com/docs/tutorials/#core-benefits
morehttps://python.langchain.com/oss/python/integrations/providers/overview
LangGraphhttps://python.langchain.com/oss/python/langgraph/overview
agentshttps://python.langchain.com/oss/python/langchain/agents
​https://python.langchain.com/docs/tutorials/#create-an-agent
Installation instructionshttps://python.langchain.com/oss/python/langchain/install
Quickstart guidehttps://python.langchain.com/oss/python/langchain/quickstart
​https://python.langchain.com/docs/tutorials/#core-benefits
Standard model interfaceDifferent providers have unique APIs for interacting with models, including the format of responses. LangChain standardizes how you interact with models so that you can seamlessly swap providers and avoid lock-in.Learn morehttps://python.langchain.com/oss/python/langchain/models
Easy to use, highly flexible agentLangChain’s agent abstraction is designed to be easy to get started with, letting you build a simple agent in under 10 lines of code. But it also provides enough flexibility to allow you to do all the context engineering your heart desires.Learn morehttps://python.langchain.com/oss/python/langchain/agents
Built on top of LangGraphLangChain’s agents are built on top of LangGraph. This allows us to take advantage of LangGraph’s durable execution, human-in-the-loop support, persistence, and more.Learn morehttps://python.langchain.com/oss/python/langgraph/overview
Debug with LangSmithGain deep visibility into complex agent behavior with visualization tools that trace execution paths, capture state transitions, and provide detailed runtime metrics.Learn morehttps://python.langchain.com/langsmith/home
Edit this page on GitHubhttps://github.com/langchain-ai/docs/edit/main/src/oss/langchain/overview.mdx
file an issuehttps://github.com/langchain-ai/docs/issues/new/choose
Connect these docshttps://python.langchain.com/use-these-docs
Install LangChainNexthttps://python.langchain.com/oss/python/langchain/install
Docs by LangChain home pagehttps://python.langchain.com/
githubhttps://github.com/langchain-ai
xhttps://x.com/LangChain
linkedinhttps://www.linkedin.com/company/langchain/
youtubehttps://www.youtube.com/@LangChain
Forumhttps://forum.langchain.com/
Changeloghttps://changelog.langchain.com/
LangChain Academyhttps://academy.langchain.com/
Trust Centerhttps://trust.langchain.com/
Abouthttps://langchain.com/about
Careershttps://langchain.com/careers
Bloghttps://blog.langchain.com/
githubhttps://github.com/langchain-ai
xhttps://x.com/LangChain
linkedinhttps://www.linkedin.com/company/langchain/
youtubehttps://www.youtube.com/@LangChain
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