# LangChain

Open-source framework for building LLM applications and agents, with LangSmith and LangGraph for observability and orchestration.

- Company: LangChain
- Category: Agents & Automation
- Business model: Open (open weights/source)
- Availability: global
- Launched: 2022-10
- Tags: framework, open-source, agents, llm-apps
- Website: https://www.langchain.com
- Canonical URL: https://globalaiproductindex.com/products/langchain/
- Record updated: 2026-07-24

## Sources

- [Official website](https://www.langchain.com)
- [Source code (GitHub)](https://github.com/langchain-ai/langchain)

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Data from the [Global AI Product Index](https://globalaiproductindex.com/), licensed CC BY 4.0.