app

LangChain

LangChain is an MIT‑licensed open‑source library that lets you build, test, and deploy AI agents using pre‑built architectures and over 1,000 model/tool integrations. It runs on Python and can be combined with the LangSmith platform for observability, evaluation, and deployment, but the core framework itself is free to use.

  • free-tier
  • cloud
  • self-host
  • Commercial

What it can help with

  • agent framework
  • llm orchestration
  • tool integrations
  • python
  • langsmith