fast-langgraph Rust + Python Rust-backed checkpoint and state operations for LangGraph. Drop-in, zero config, 737× faster checkpoint serialization.
A Rust performance layer for LangGraph. Drop-in components accelerate checkpoint serialization (737× on 235 KB state), state updates (45.9×), LLM caching and executor management — while passing 85 of 88 upstream LangGraph tests.
Install
$ pip install fast-langgraphFrequently asked questions
What is fast-langgraph?
fast-langgraph is Rust-backed checkpoint and state operations for LangGraph. Drop-in, zero config, 737× faster checkpoint serialization. It is part of the Neul Labs open-source portfolio (36 MIT-licensed projects for AI agent infrastructure). A Rust performance layer for LangGraph. Drop-in components accelerate checkpoint serialization (737× on 235 KB state), state updates (45.9×), LLM caching and executor management — while passing 85 of 88 upstream LangGraph tests.
How do I install fast-langgraph?
Install with: `pip install fast-langgraph`. fast-langgraph is MIT licensed and ships prebuilt binaries where applicable.
What language is fast-langgraph written in?
fast-langgraph is written in Rust + Python.
Is fast-langgraph open source?
Yes. fast-langgraph is MIT licensed and publicly available at https://github.com/neul-labs/fast-langgraph. All 36 Neul Labs projects are MIT licensed.
How does fast-langgraph compare to alternatives?
See the detailed comparison at https://www.neullabs.com/compare/fast-langgraph-vs-langgraph.