# Cypress vs Vitest

| Attribute | Cypress | Vitest |
|---|---|---|
| **Vioscale score** | 69.6 (77% (high)) | 73.6 (78% (high)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 126,733 | 30,558 |
| adoption.github_stars | 51,000 | 17,012 |
| adoption.package_downloads_weekly | 7,399,963 | 96,385,267 |
| adoption.stackoverflow_questions | 30,000 | 1,200 |
| content.faq | `[{"answer":"Cypress is an open-source JavaScript-based testing framework designed for end-to-end and component testing of web applications. It executes tests directly in the browser, allowing developers to write tests using JavaScript and interact with the DOM as the browser renders content. The framework includes built-in features for test creation, debugging, and introspection of application state during test execution.","source":"https://www.cypress.io","question":"What is Cypress and what types of testing does it support?","confidence":0.95},{"answer":"Cypress is licensed under the MIT License and is completely free as an open-source project with millions of weekly downloads. The company also offers Cypress Cloud, a paid subscription service with tiered plans for teams needing advanced capabilities such as test parallelization, analytics, test replay, and CI/CD integration. The free tier includes basic cloud features; paid plans scale with test volume and additional enterprise features.","source":"https://www.cypress.io/pricing","question":"Is Cypress open source and what does it cost?","confidence":0.95},{"answer":"Cypress runs on Windows, macOS, and Linux and supports testing in Chromium (via bundled Electron), Chrome, Firefox, and Edge browsers, with experimental WebKit support available. The framework requires Node.js 20.x or later. System requirements are modest for local development, though CI environments should have at least 2 CPUs and 4 GB of RAM for optimal performance.","source":"https://docs.cypress.io/guides/getting-started/installing-cypress","question":"What operating systems and browsers does Cypress support?","confidence":0.93},{"answer":"Cypress runs directly within the browser context rather than communicating with the browser remotely, which eliminates timing issues and provides instant, synchronous access to the DOM and application state. This architecture enables faster test execution, simpler debugging with browser developer tools, and more reliable handling of modern asynchronous web applications. Cypress is JavaScript-first, whereas Selenium supports multiple languages.","source":"https://www.cypress.io","question":"How does Cypress differ from Selenium and similar testing tools?","confidence":0.92},{"answer":"Cypress integrates seamlessly with popular CI/CD platforms including GitHub Actions, GitLab CI, CircleCI, Jenkins, and others through Cypress Cloud or self-hosted runners. The platform supports test parallelization and orchestration to distribute test execution across multiple machines, reducing overall CI run time and improving development feedback loops.","source":"https://www.cypress.io","question":"Can Cypress integrate with CI/CD pipelines and run tests in parallel?","confidence":0.94},{"answer":"Cypress tests are written in JavaScript or TypeScript, allowing developers to leverage JavaScript ecosystem tools and libraries. The framework works with npm, Yarn, pnpm, and Bun as package managers, providing flexibility for teams with different dependency management preferences.","source":"https://docs.cypress.io/guides/getting-started/installing-cypress","question":"What languages and package managers can I use with Cypress?","confidence":0.94},{"answer":"Cypress includes comprehensive debugging tools built into the test runner, including DOM inspection, network activity monitoring, and console access. For CI failures, Cypress Cloud offers test replay functionality that allows developers to rewind and examine test execution step-by-step, significantly reducing the time needed to diagnose flaky tests or failures in remote environments.","source":"https://www.cypress.io","question":"What debugging and troubleshooting capabilities does Cypress provide?","confidence":0.93}]` | `[{"answer":"Vitest is a testing framework designed specifically for projects built with Vite. It reuses Vite's configuration and build plugins, eliminating duplicate setup when your application and tests share the same build pipeline. Developers using Vite benefit from streamlined testing without configuration overhead, though Vitest also works with projects that don't use Vite.","source":"https://vitest.dev","question":"What is Vitest and who should use it?","confidence":0.95},{"answer":"Yes, Vitest natively supports ESM, TypeScript, and JSX without requiring additional configuration or build steps. The framework automatically recognizes these modern JavaScript features through its integration with Vite's transformation pipeline, reducing setup complexity for developers working with contemporary toolchains.","source":"https://vitest.dev","question":"Does Vitest support TypeScript, JSX, and modern JavaScript out of the box?","confidence":0.95},{"answer":"Vitest's watch mode intelligently reruns only the tests affected by changes in your code, similar to how Vite's Hot Module Reload works for development. This approach is faster than manually filtering tests or waiting for full test suite reruns after each edit, improving developer experience during development cycles.","source":"https://vitest.dev","question":"How does Vitest's watch mode differ from other test runners?","confidence":0.92},{"answer":"Yes, Vitest includes a browser mode that executes tests in real browsers using Playwright (supporting Chromium, Firefox, and WebKit) or WebdriverIO (supporting Chrome, Firefox, Edge, and Safari). This enables genuine DOM interaction testing, component testing, and visual regression detection rather than relying on DOM simulation.","source":"https://vitest.dev/guide/browser.html","question":"Can I run tests in actual browsers with Vitest?","confidence":0.93},{"answer":"Vitest provides API compatibility with Jest, including support for `expect()` assertions, snapshot testing, and mocking. This makes it a potential drop-in replacement for Jest projects, though Vitest is optimized for Vite-based applications and may require configuration adjustments if your project uses other build systems.","source":"https://vitest.dev/guide/comparisons.html","question":"Is Vitest compatible with Jest, and can I migrate from Jest?","confidence":0.91},{"answer":"Vitest supports two coverage providers: V8 (native, faster, lower memory usage) and Istanbul (works with any JavaScript runtime but slower). Both providers generate multiple report formats including HTML, text summaries, and LCOV, and allow filtering which files to include or exclude from coverage calculations.","source":"https://vitest.dev/guide/coverage.html","question":"What code coverage options does Vitest provide?","confidence":0.93},{"answer":"Vitest requires Node.js version 20 or later and Vite version 6 or later. It can be installed and run through common package managers including npm, yarn, pnpm, and bun, making it accessible to most JavaScript development environments.","source":"https://vitest.dev/guide/","question":"What are Vitest's system requirements and minimum dependencies?","confidence":0.94},{"answer":"Yes, Vitest is completely free and open-source, maintained by a community of contributors with support from corporate sponsors. There is no licensing cost, commercial licensing model, or requirement to pay for core features or basic usage.","source":"https://vitest.dev","question":"Is Vitest free and open-source?","confidence":0.94}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | - |
| description.long | An open-source testing framework for JavaScript applications that enables developers to write, run, and debug front-end tests. Supports end-to-end and component testing with a cloud-based service option available. | Vitest is a test runner built on Vite that understands your Vite configuration and reuses its build pipelines. It's Jest-compatible, supports TypeScript and JSX out of the box, and works for both frontend and backend code. |
| features.capabilities | `{"languages":"JavaScript/TypeScript","assertions":true,"ci_integration":true,"browser_automation":true}` | `{"coverage":true,"languages":"TypeScript, JSX","assertions":true,"watch_mode":true,"snapshot_testing":true}` |
| integrations.count | 3 | 2 |
| integrations.list | `[{"name":"Jira"},{"name":"GitHub Enterprise"},{"name":"GitLab Enterprise"}]` | `[{"name":"Vite"},{"name":"Jest"}]` |
| language.primary | TypeScript | TypeScript |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"source":"https://vitest.dev","hqCountry":"US","confidence":0.9,"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Starter","summary":"Free","features":["Parallelization","Test Replay","Project Analytics","Cloud MCP"],"description":"Free plan for teams starting with Cypress","contactSales":false,"includedLimits":{"users":"50","prompt_execs":"100/month","test_results":"500/month","data_retention":"30 days"}},{"free":false,"name":"Team","summary":"$67/month or $799/year billed annually","features":["Parallelization","Test Replay","Project Analytics","Cloud MCP","Flake Detection","Flaky Test Analytics","Jira Integration","Email Support"],"minSeats":50,"components":[{"kind":"fixed","amount":67,"period":"month","currency":"USD"},{"kind":"fixed","amount":799,"period":"year","currency":"USD"},{"per":{"qty":1000,"unit":"test_results"},"kind":"metered","amount":5.28,"currency":"USD"},{"per":{"qty":1000,"unit":"test_results_ondemand"},"kind":"metered","amount":6,"currency":"USD"}],"description":"For growing teams optimizing their test suite quality","contactSales":false,"includedLimits":{"users":"50","prompt_execs":"9k/year","test_results":"120k/year","data_retention":"90 days"}},{"free":false,"name":"Business","summary":"$267/month or $3,199/year billed annually","features":["Parallelization","Test Replay","Project Analytics","Cloud MCP","Flake Detection","Flaky Test Analytics","Jira Integration","Email Support","Spec Prioritization","Auto Cancellation","GitHub Enterprise","GitLab Enterprise","SSO"],"minSeats":50,"components":[{"kind":"fixed","amount":267,"period":"month","currency":"USD"},{"kind":"fixed","amount":3199,"period":"year","currency":"USD"},{"per":{"qty":1000,"unit":"test_results"},"kind":"metered","amount":4.4,"currency":"USD"},{"per":{"qty":1000,"unit":"test_results_ondemand"},"kind":"metered","amount":5,"currency":"USD"}],"description":"For businesses improving their quality and efficiency at scale","contactSales":false,"includedLimits":{"users":"50","prompt_execs":"24k/year","test_results":"120k/year","data_retention":"90 days"}},{"free":false,"name":"Enterprise","summary":"Custom pricing","features":["Parallelization","Test Replay","Project Analytics","Cloud MCP","Flake Detection","Flaky Test Analytics","Jira Integration","Email Support","Spec Prioritization","Auto Cancellation","GitHub Enterprise","GitLab Enterprise","SSO","Enterprise Reporting","Data Extract API","Premium Support","Enterprise Roadmap","Technical Consultant"],"description":"For organizations with custom needs at enterprise scale","contactSales":true,"includedLimits":{"users":"Unlimited","prompt_execs":"60k/year","test_results":"1.8M/year","data_retention":"180 days"}}],"summary":"From $67/month. Free tier available. 30-day free trial of Enterprise features.","currency":"USD","freeTier":true,"sourceUrl":"https://www.cypress.io","retrievedAt":"2026-08-05T13:09:17.696Z","freeTrialDays":30,"startingPrice":{"amount":4.4,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://vitest.dev","retrievedAt":"2026-08-14T11:06:21.578Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | low | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 13 | 5 |
| release.history | `[{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.21.1","date":"2026-08-25T16:56:17Z","type":"stable","version":"v15.21.1"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.21.0","date":"2026-08-18T19:47:37Z","type":"stable","version":"v15.21.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.20.1","date":"2026-08-10T17:56:37Z","type":"stable","version":"v15.20.1"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.20.0","date":"2026-08-04T21:53:30Z","type":"stable","version":"v15.20.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.19.0","date":"2026-07-21T17:46:33Z","type":"stable","version":"v15.19.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.18.1","date":"2026-07-07T17:57:17Z","type":"stable","version":"v15.18.1"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.18.0","date":"2026-06-23T17:51:38Z","type":"stable","version":"v15.18.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.17.0","date":"2026-06-09T16:32:50Z","type":"stable","version":"v15.17.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.16.0","date":"2026-05-26T21:57:32Z","type":"stable","version":"v15.16.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.15.0","date":"2026-05-12T18:02:05Z","type":"stable","version":"v15.15.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.14.2","date":"2026-04-29T18:39:32Z","type":"stable","version":"v15.14.2"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.14.1","date":"2026-04-21T17:22:37Z","type":"stable","version":"v15.14.1"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.14.0","date":"2026-04-16T18:45:31Z","type":"stable","version":"v15.14.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.13.1","date":"2026-04-07T19:41:05Z","type":"stable","version":"v15.13.1"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.13.0","date":"2026-03-24T18:20:32Z","type":"stable","version":"v15.13.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.12.0","date":"2026-03-13T17:54:12Z","type":"stable","version":"v15.12.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.11.0","date":"2026-02-25T17:14:54Z","type":"stable","version":"v15.11.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.10.0","date":"2026-02-03T22:18:26Z","type":"stable","version":"v15.10.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.9.0","date":"2026-01-13T20:46:12Z","type":"stable","version":"v15.9.0"},{"url":"https://github.com/cypress-io/cypress/releases/tag/v15.8.2","date":"2026-01-06T16:01:49Z","type":"stable","version":"v15.8.2"}]` | `[{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.11","date":"2026-08-18T14:21:05Z","type":"stable","version":"v4.1.11"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-rc.2","date":"2026-08-17T13:23:20Z","type":"prerelease","version":"v5.0.0-rc.2"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-rc.1","date":"2026-08-11T23:41:46Z","type":"prerelease","version":"v5.0.0-rc.1"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.7","date":"2026-07-24T11:40:54Z","type":"prerelease","version":"v5.0.0-beta.7"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.6","date":"2026-07-06T06:52:52Z","type":"prerelease","version":"v5.0.0-beta.6"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.10","date":"2026-07-06T06:41:38Z","type":"stable","version":"v4.1.10"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v3.2.7","date":"2026-07-06T06:35:34Z","type":"stable","version":"v3.2.7"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.5","date":"2026-06-15T08:49:24Z","type":"prerelease","version":"v5.0.0-beta.5"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.9","date":"2026-06-16T06:13:58Z","type":"stable","version":"v4.1.9"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.4","date":"2026-06-01T08:40:54Z","type":"prerelease","version":"v5.0.0-beta.4"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.8","date":"2026-06-01T08:15:20Z","type":"stable","version":"v4.1.8"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v3.2.6","date":"2026-06-01T09:39:20Z","type":"stable","version":"v3.2.6"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v3.2.5","date":"2026-06-01T08:35:18Z","type":"stable","version":"v3.2.5"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.3","date":"2026-05-19T07:53:46Z","type":"prerelease","version":"v5.0.0-beta.3"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.7","date":"2026-05-20T07:20:12Z","type":"stable","version":"v4.1.7"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.6","date":"2026-05-11T14:38:28Z","type":"stable","version":"v4.1.6"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.2","date":"2026-05-05T10:42:16Z","type":"prerelease","version":"v5.0.0-beta.2"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.1","date":"2026-04-23T10:30:39Z","type":"prerelease","version":"v5.0.0-beta.1"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.5","date":"2026-04-21T11:04:32Z","type":"stable","version":"v4.1.5"},{"url":"https://github.com/vitest-dev/vitest/releases/tag/v4.1.4","date":"2026-04-09T07:37:17Z","type":"stable","version":"v4.1.4"}]` |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.iso27001 | yes | - |
| security.scorecard | 5.2 | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=cypress&per_page=100","last_12m":0,"max_severity":null}` | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=vitest&per_page=100","last_12m":1,"max_severity":"CRITICAL"}` |

## Capabilities (Testing Tools)

| Capability | Cypress | Vitest |
|---|:--:|:--:|
| **Core** |  |  |
| Test types | - | - |
| Browser automation | ✓ | - |
| Built-in assertion library | ✓ | ✓ |
| Languages | JavaScript/TypeScript | TypeScript, JSX |
| **Isolation** |  |  |
| Mocking / stubbing | - | - |
| **Techniques** |  |  |
| Snapshot testing | - | ✓ |
| **Performance** |  |  |
| Parallel execution | - | - |
| **Insight** |  |  |
| Code coverage | - | ✓ |
| **DX** |  |  |
| Watch mode | - | ✓ |
| **Ops** |  |  |
| CI integration | ✓ | - |

*Source: Vioscale. Generated 2026-09-01T14:44:28.733Z. "-" = undocumented, not absent.*