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LangChain

LangChain is the agent engineering platform: an MIT-licensed Python framework from the LangChain team for building agents and LLM applications by chaining interoperable components with third-party model, tool, and vector-store integrations.
See highlightsOpen github.com
Stars
148k
Language
Python
License
MIT
Reading time
2 min
Published by
Community
Author
LangChain
Last verified
Oct 2026
Tagscommunitycatalog-importcobanovlogicrwpythonagentsrag
Works forJev for Tool callingJev for Document processing
Used inJev for Software & DevTools
Languages
Python
Capabilities
Open source

Highlights

  • Install with uv add langchain; the quickstart builds a chat model with init_chat_model and one invoke call.
  • GitHub: 147,862 stars, 24,810 forks, created October 2022, last pushed 2026-10-15.
  • Deep Agents, LangGraph, LangSmith, and LangSmith Deployment round out the ecosystem.
  • Integrations span chat and embedding models, tools and toolkits, vector stores, and retrievers.
  • The README points to langchain-ai/langchainjs for the equivalent JS/TS library.

Quickstart

bash
uv add langchain

Watch out

Copy reviewed against the repo README on 2026-10-15; the README describes LangChain's own components, ecosystem, and integrations but does not mention Jev or TypeSafe, so the connection here is its placement on the cobanov and logicrw community lists. No pricing beyond PyPI download badges is stated.

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