Chloe and LangChain.js

LangChain.js, without the graph.

Agents as plain async functions, with the schedule built in rather than on a paid platform.

Chloe or LangChain.js: which should I use?

Use LangChain.js, with LangGraph, if your agent is a large graph of states and you want LangSmith to run and trace it. Use Chloe if your agent is a set of jobs: plain async functions, with schedules, approvals and a record of every run built in, on your own machine.

LangChain.jsChloe

Behaviour written inA graph, in TypeScriptTypeScript

Next step chosen byThe model, or graph edgesYour code

Model answersTyped, via zodTyped, checked

Agent limitsStep cap, call limitsTools, steps, budget

Waiting on a personinterrupt(), with a checkpointerParks for days

On a scheduleOn LangSmith onlyBuilt in

Run historyLangSmithBuilt in, with cost

Packages installedAbout 2220

Best forComplex graph agentsDaily routines

From LangChain.js's docs, read 3 Oct 2026. Out of date? Tell us.

Every run

See which line asked a model, and what it cost.

StepTookCost

load messagesstep12msfree

classify issuemodel1.4s$0.0031

investigate issueagent14.2s$0.0190

Chloe

$ npm install @chloejs/core && npx chloe setup

Get Started Examples