Jotai vs Zustand

Both made by the same people. Both are better than Redux. The difference is atoms vs stores.

Same Creator, Different Philosophy

Dai Shi (pmndrs) created both. Zustand is a top-down store. Jotai is bottom-up atoms. They solve the same problem differently.

Zustand: Create a store with state and actions. Subscribe to slices. Simple.

Jotai: Create atoms (individual pieces of state). Compose them. Derive computed values. More granular, more React-like.

Why Zustand is Easier

A Zustand store is just an object. create((set) => ({ count: 0, increment: () => set(s => ({ count: s.count + 1 })) })). Done.

No providers, no context, no wrappers. Use it anywhere. The API is 5 functions. You can learn it in 10 minutes.

It works outside React too. Use it in vanilla JS, in a worker, wherever.

When Jotai Shines

Jotai prevents unnecessary re-renders at a granular level. If component A uses atom X and component B uses atom Y, updating X never re-renders B. With Zustand, you need selectors to achieve this.

Async atoms are elegant. atom(async (get) => fetch(get(urlAtom))) — derived async state in one line.

For forms, complex UI state, or apps with many independent pieces of state, Jotai's atom model scales better.

Quick Comparison

Factor	Jotai	Zustand
Mental Model	Atoms (bottom-up)	Store (top-down)
Learning Curve	Medium	Easy
Re-render Control	Automatic, granular	Selectors needed
Async State	Built-in (async atoms)	Manual
DevTools	Good	Good
Bundle Size	~3KB	~1KB
Outside React	React-focused	Works anywhere

The Verdict

Use Jotai if: You have lots of independent state atoms, need fine-grained re-render control, or love the atom/derived value pattern.

Use Zustand if: You want the simplest possible state management, need to use state outside React, or just want something that works without thinking.

Consider: If you're using TanStack Query for server state, you might not need either. Client state is often smaller than you think.

The Bottom Line

Zustand wins

Zustand is simpler to understand and works for 90% of state management needs. Jotai is more powerful for fine-grained reactivity but the mental model is harder to grok. Start with Zustand, reach for Jotai when you need it.

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