March 15, 2025
Introducing the LangGraph Functional API
Have you ever wanted to take advantage of LangGraph’s core features like human-in-the-loop, persistence/memory, and streaming without having to explicitly define a graph? We’re excited to announce the release of the Functional API for LangGraph, available in Python and JavaScript. The functional API allows you to leverage LangGraph features using a more traditional programming paradigm, making it easier to build AI workflows that incorporate human-in-the-loop interactions, short-term and long-term memory, and streaming capabilities. The Functional API consists of two decorators — entrypoint and task — which allow you to define workflows using standard functions, and use regular loops and conditionals