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Vitest vs Jest
Trust Score comparison · March 2026
Signal Comparison
12M/wkWeekly npm downloads28M/wk
280GitHub commits (90d)180
14kGitHub stars44k
18kStack Overflow questions180k
Very ActiveCommunity healthExcellent
VitestJest
Key Differences
| Factor | Vitest | Jest |
|---|---|---|
| License | MIT | MIT |
| Language | TypeScript | TypeScript / JavaScript |
| Hosted | Self-hosted | Self-hosted |
| Free tier | ✓ Yes | ✓ Yes |
| Open Source | ✓ Yes | ✓ Yes |
| TypeScript | ✓ | ✓ |
Pick Vitest if…
- Your project uses Vite (Nuxt, SvelteKit, vanilla Vite)
- You want Jest-compatible API with 10x faster cold starts
- Modern ESM-first TypeScript project
Pick Jest if…
- Testing JavaScript/TypeScript code — unit, integration, snapshot
- You need zero-config test setup with batteries included
- Working in a React/Next.js project (best ecosystem support)
Side-by-side Quick Start
Vitest
// math.test.ts
import { describe, it, expect, vi } from 'vitest';
import { multiply } from './math';
describe('multiply', () => {
it('multiplies two numbers', () => {
expect(multiply(3, 4)).toBe(12);
});
});Jest
// sum.test.ts
import { sum } from './sum';
describe('sum', () => {
it('adds two numbers', () => {
expect(sum(1, 2)).toBe(3);
});
it('handles negative numbers', () => {
expect(sum(-1, 1)).toBe(0);
});
});Community Verdict
Based on upvoted notes🏆
Jest wins this comparison
Trust Score 91 vs 88 · 3-point difference
Jest leads on Trust Score with stronger signal data across downloads and community health. That said, the other tool is worth considering if your use case matches its specific strengths above.