Zustand vs Redux Toolkit: Which Do You Actually Need?

Zustand just passed Redux in weekly npm downloads. Not Redux Toolkit — the original redux package. The library that defined React state management for nearly a decade now has fewer weekly installs than a 1KB store with no providers.

That's not a fluke. It's a signal. We put Zustand and Redux Toolkit head-to-head using real-time npm data from PkgPulse to figure out which one you actually need in 2026.

Here's what the data says.

At a Glance: The Numbers

Metric	Zustand	Redux Toolkit
Weekly Downloads	~24M	~12M
Bundle Size (min+gzip)	~1.2KB (core)	~14KB (+react-redux)
GitHub Stars	50K+	11K (RTK) / 61K (Redux core)
First Release	2019	2019
Current Version	5.x	2.x
TypeScript	Built-in	Built-in
License	MIT	MIT

See the full live comparison — health scores, download trends, and more — at pkgpulse.com/compare/redux-vs-zustand

The headline stat: Zustand's core is 12x smaller than Redux Toolkit. On a throttled 3G connection, that 13KB difference adds roughly 100ms to your initial load. For most apps, that's the entire decision.

But bundle size isn't everything. Let's dig in.

Setup Complexity: 12 Lines vs 28

This is where Zustand's appeal becomes visceral. Here's the same counter in both libraries.

Zustand

import { create } from 'zustand'

const useStore = create((set) => ({
  count: 0,
  increment: () => set((s) => ({ count: s.count + 1 })),
  decrement: () => set((s) => ({ count: s.count - 1 })),
}))

function Counter() {
  const { count, increment, decrement } = useStore()
  return <button onClick={increment}>{count}</button>
}

No provider. No context. No wiring. You create a store, you use it. That's it.

Redux Toolkit

import { configureStore, createSlice } from '@reduxjs/toolkit'
import { Provider, useSelector, useDispatch } from 'react-redux'

const counterSlice = createSlice({
  name: 'counter',
  initialState: { count: 0 },
  reducers: {
    increment: (state) => { state.count += 1 },
    decrement: (state) => { state.count -= 1 },
  },
})

const store = configureStore({ reducer: { counter: counterSlice.reducer } })

function Counter() {
  const count = useSelector((s) => s.counter.count)
  const dispatch = useDispatch()
  return <button onClick={() => dispatch(counterSlice.actions.increment())}>{count}</button>
}

// Don't forget the Provider wrapping your app
function App() {
  return <Provider store={store}><Counter /></Provider>
}

Same feature. More than twice the code. The Provider, the dispatch pattern, the action creators, the slice configuration — RTK reduced Redux boilerplate significantly, but Zustand starts from a fundamentally lower baseline.

The takeaway: For a counter, Zustand wins hands-down. The question is whether that simplicity scales.

Bundle Size: It's Not Just About KB

The raw numbers:

• Zustand: ~1.2KB gzipped (core). Add the devtools and persist middleware and you're at ~3KB.
• Redux Toolkit: ~14KB gzipped. Add react-redux (~5KB) and you're at ~19KB before RTK Query.
• RTK Query: adds another ~11KB if you use it.

That means a full RTK + RTK Query setup is roughly 10x heavier than Zustand with all middleware.

For most production apps with 200KB+ of dependencies, 14KB isn't a dealbreaker. But if you're building a performance-sensitive SPA, an embeddable widget, or anything running on spotty connections, Zustand's size is a genuine advantage.

TypeScript: Both Excellent, Different Flavors

Both libraries are written in TypeScript with first-class support. The difference is in how much typing you have to do yourself.

Zustand

interface TodoState {
  todos: string[]
  addTodo: (todo: string) => void
}

const useTodoStore = create<TodoState>()((set) => ({
  todos: [],
  addTodo: (todo) => set((s) => ({ todos: [...s.todos, todo] })),
}))

One interface. Types flow through automatically. No typed hooks setup, no RootState, no AppDispatch.

Redux Toolkit

// store.ts
export type RootState = ReturnType<typeof store.getState>
export type AppDispatch = typeof store.dispatch

// hooks.ts
export const useAppDispatch = useDispatch.withTypes<AppDispatch>()
export const useAppSelector = useSelector.withTypes<RootState>()

RTK's types are excellent once configured. But that configuration is ceremony that Zustand simply doesn't need.

The trade-off: RTK's explicit typing shines in large codebases where you want strict contracts between slices. Zustand's inference works beautifully until your store gets deeply nested.

Performance: Zustand Has the Edge

Benchmarks with 1,000 subscribed components tell a consistent story:

Metric	Zustand	Redux Toolkit
Single update render	12ms	18ms
Memory usage	2.1MB	3.2MB
Bundle parse time (4x throttle)	8ms	34ms

Zustand is roughly 33% faster on single updates and uses 34% less memory in this scenario. The bundle parse difference is even more dramatic — 4x faster on throttled devices.

Both are fast enough for virtually any app. But Zustand's smaller footprint gives it an inherent advantage in parse time, memory pressure, and update speed. These margins compound in complex UIs with frequent state changes.

DevTools: Redux Is Still the Gold Standard

This is where Redux Toolkit fights back convincingly.

Feature	Zustand	Redux Toolkit
Time-travel debugging	Via middleware (basic)	Built-in, first-class
Action logging	Via devtools middleware	Built-in, detailed
State diff inspection	Basic	Comprehensive
State export/import	No	Yes
Action replay	Limited	Full support

Both use the Redux DevTools browser extension. But RTK's integration is native and deep — full time-travel, state export/import, action replay, and detailed diffs. Zustand's devtools middleware gives you state inspection and action logging, which covers 80% of debugging needs but misses the power-user features.

If your team relies on time-travel debugging or needs to reproduce bugs from exported state, Redux Toolkit is meaningfully better here.

When to Choose Zustand

• Small-to-medium apps where simplicity and bundle size matter
• You want zero boilerplate — no providers, no dispatch, no action creators
• Bundle-conscious apps — widgets, embedded UIs, mobile web
• Your team values speed — faster to learn, faster to write, faster to parse
• You're using TanStack Query for server state and just need a lightweight client store for UI state, auth, and preferences
• Solo devs and small teams who don't need enforced architectural patterns

When to Choose Redux Toolkit

• Large teams (10+ developers) who benefit from strict, predictable patterns
• Complex, interconnected state trees — RTK's slice-based architecture scales well when you have dozens of related state domains
• You need RTK Query — if your server-state solution is deeply integrated with your client state, RTK Query is a compelling all-in-one package
• Time-travel debugging is critical — regulated apps, complex form workflows, or bug reproduction from exported state
• You're already using Redux — migrating to RTK is a smooth upgrade path; migrating to Zustand is a rewrite

Decision Framework

Start here:

Do you need RTK Query's integrated data fetching?
├── Yes → Redux Toolkit
└── No → Continue

Is your team 10+ developers who need enforced patterns?
├── Yes → Redux Toolkit
└── No → Continue

Do you need advanced time-travel debugging or state export?
├── Yes → Redux Toolkit
└── No → Continue

Is your app small-to-medium, or are you starting fresh?
├── Yes → Zustand
└── No → Zustand (still)

For most projects in 2026, the answer is Zustand. The modern pattern is TanStack Query for server state + Zustand for client state. This combination covers 90% of React apps with minimal complexity.

Redux Toolkit isn't going anywhere — it's battle-tested, well-maintained, and the right tool for large-scale enterprise apps. But for the average project, it's more architecture than you need.

The Verdict

In 2026, nobody writes vanilla Redux. It's all Redux Toolkit. But even with RTK's dramatic simplification, Zustand starts from a lower floor and stays simpler at scale for most apps.

Zustand is the pragmatic default. 1KB, zero providers, instant productivity. If you're starting a new project and don't have a specific reason to reach for RTK, start here.

Redux Toolkit is the structured choice. Enforced patterns, enterprise-grade devtools, and RTK Query make it the right pick for large teams who need architectural guardrails.

The best state management is the one that stays out of your way. For most teams, that's Zustand. For some, that's RTK's predictable structure. Check your project's needs against the decision framework above, and let the data guide you.

Compare Redux vs Zustand on PkgPulse →

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Frequently Asked Questions

Is Zustand replacing Redux?

In terms of new project adoption, largely yes. Zustand has overtaken Redux in weekly npm downloads and captures 40%+ of new React projects. But Redux (via RTK) remains deeply entrenched in enterprise codebases and isn't disappearing — it's specializing into large-team, complex-state use cases. Check the live download trends on PkgPulse for the latest data.

Can Zustand handle complex state?

Yes. Zustand supports middleware (immer, persist, devtools), sliced stores for modular state, and computed values. It scales well for medium-complexity apps. Where it starts to feel the pressure is deeply interconnected state trees with strict access patterns — that's where RTK's slices and enforced reducer logic provide structural safety.

Should I migrate from Redux to Zustand?

Not automatically. If your Redux codebase works and your team is productive, migration cost outweighs the benefits. If you're finding Redux boilerplate slowing you down, or you're starting new features in an existing app, consider Zustand for those new features alongside your existing Redux setup — they can coexist.

What about Jotai or Valtio?

They're part of the same pmndrs ecosystem as Zustand but solve different problems. Jotai is atomic (think Recoil but simpler) — great for fine-grained, independent pieces of state. Valtio uses JavaScript proxies for a mutable-feeling API. Zustand is the most general-purpose of the three and the safest default. See our state management comparisons on PkgPulse for head-to-head data.

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