Tag: langchain
All the articles with the tag "langchain".
LangChain and LangGraph, from the Inside: What the Frameworks Compile Down To
Updated:Agent frameworks are an opinion about state and control flow. LangChain's runnables composed with a pipe turn out to be function composition with a shared interface; LangGraph's state graph is a loop with typed state, reducers and a checkpoint after every step. The same agent written by hand and with LangGraph (LangGraph 1.2, langchain-core 1.6): the same 10 lines with LangGraph's prebuilt pieces, under half a millisecond of overhead per run, and what that buys: pausing for a person's approval, editing a pending tool call, resuming, and replaying from any saved step.