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Agent frameworkslangchain-ai

langchain

The best-known toolkit for LLM apps: one interface to dozens of models, plus tools, chains and agents. You can swap providers without rewriting the app.

Who it is for

For Python developers building LLM apps who want ready-made integrations.

How to start

  1. Install: uv add langchain.
  2. Create a model with init_chat_model from langchain.chat_models (see the README Quickstart).
  3. Open docs.langchain.com to wire in tools and agents.

Steps are taken from the README. Check the current version in the repository before running them.

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The agent engineering platform.

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