LangChain stock & equity tools

LangChain is a software framework that helps facilitate the integration of large language models (LLMs) into applications. As a language model integration framework, LangChain's use-cases largely overlap with those of language models in general, including document analysis and summarization, chatbots, and code analysis.

Source: Wikipedia (CC BY-SA 4.0)

Harrison Chase released LangChain as a Python package in October 2022 while working as an ML engineer at Robust Intelligence, and it became one of the fastest-adopted open-source frameworks for LLM application development. The San Francisco company now ships LangGraph for stateful agent workflows, LangSmith for observability and evaluation, and LangServe for deployment, spanning Python and JavaScript. Sequoia led a $25M Series A at a $200M valuation in February 2024, and IVP led an October 2025 Series B that pushed the round to $125M at a $1.25B valuation, with CapitalG, Sapphire, Sequoia, and Benchmark participating.

Sources: techcrunch.com · en.wikipedia.org · blog.langchain.com