LangChain is an open-source LLM application framework founded by Harrison Chase in 2022. LangChain, LangSmith, LangGraph and LangServe form an end-to-end toolchain from prototype to production, with 100k+ GitHub stars.
LangSmith organizes service providers and product options around related products, services, and industry information so readers can research product differences, service quality, use cases, and industry changes.