Jest vs Jasmine
Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
Free and open source
Open sourceFree and open source
Open sourceWhat drives the bill
The metric that actually scales your invoice.
Free and open source. You pay in engineering time and CI minutes.
Free and open source. You pay in engineering time and CI minutes.
Free tier
Everything, self-hosted
Everything, self-hosted
Open source
MIT
MIT
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Category standard
OpenJS Foundation · since 2014
Established
OSS community · since 2010
Strengths
- Everything in one dependency, with defaults that work for most projects on day one.
- The largest ecosystem of matchers, reporters and framework presets in JavaScript.
- Snapshot testing is genuinely useful for serialisable output when used with restraint.
- Self-contained: spies, clocks and matchers with no extra packages.
- Runs directly in a browser without bundling.
- Extremely stable API — old suites keep working.
Limitations
- Native ESM support remains awkward, and the Babel transform layer is a recurring configuration tax.
- Noticeably slower than Vitest on large suites.
- jsdom is not a browser; subtle DOM and CSS behaviour differs from reality.
- Feels dated; snapshot testing and modern mocking are absent or bolted on.
- Momentum has moved to Jest and Vitest, including within the Angular ecosystem.
- Weaker TypeScript ergonomics than newer runners.
Best for
Existing JavaScript codebases, React Native, and teams that value ecosystem depth over raw speed.
Existing Angular codebases and browser-native test setups.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.