LangChain

Open agent platform for building, testing, deploying, and monitoring LLM applications.

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Categories
Agent Frameworks
Pricing
Free Open source, LangSmith paid
Est. monthly spend
Light Free · Medium Free · Heavy $39/mo (est.)
Open source; heavy assumes a LangSmith Plus seat $39/mo (LLM API costs extra). Rough estimates from vendors' public pricing, checked 28 Oct 2026. Not exact — always check the vendor.
Website
https://www.langchain.com
Added
5 Jul 2024
frameworkLLMopen sourcePythonagents

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