
Lance Martin
Software engineer, LangChain
About
I'm a software engineer at LangChain focused on open source and applied projects. I created many of LangChain Quickstarts focused on topics such as RAG, agents, and prompt engineering. I created LangChain's first full course, LangChain Academy, with > 35 lessons on building agents. I also created the Rag From Scratch course, which walks through the fundamentals of RAG and is features on FreeCodeCamp (>450k views). Before LangChain I spent several years as a tech lead / manager on vision systems in the self-driving industry and got a PhD from Stanford.
Sessions & Events
The Reality (and Lack Thereof) of Agents
LA 2025
LangChain's Lance Martin on the outlook for agents
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