Comparison

Locust vs Vitest

On the evidence we track, Vitest leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Locust61
Vitest74
Score
Vioscale score
Locust61 / 100low · 43%
Vitest74 / 100high · 78%
Pricing
Free tier
Locust
Vitest
Model
Price level
Locustfree
Vitestfree
Transparent
Locust
Vitest
Integrations
Count
Locust
Vitest2
Adoption
Dependent repos
Locust1,883
Vitest30,558
Github stars
Locust28,103
Vitest17,012
Package downloads weekly
Locust
Stackoverflow questions
Locust
Vitest1,200
Activity
Commits last 30d
Locust36
Vitest100
Release
Cadence days
Locust10
Vitest5
History
Locust20 items
Vitest20 items
License
Spdx
LocustMIT
VitestMIT
Language
Primary
LocustPython
Market
Availability
Content
Faq
Locust
Vitest8 items

Capabilities

Feature-by-feature on the axes that matter for testing tools. “-” means undocumented, not absent.

Core
Test types
Locust-
Vitest-
Browser automation
Locust-
Vitest-
Built-in assertion library
Locust-
Vitest
Languages
LocustPython
VitestTypeScript, JSX
Isolation
Mocking / stubbing
Locust-
Vitest-
Techniques
Snapshot testing
Locust-
Vitest
Performance
Parallel execution
Locust
Vitest-
Insight
Code coverage
Locust-
Vitest
DX
Watch mode
Locust-
Vitest
Ops
CI integration
Locust-
Vitest-

What each one is

The product in its own terms, so the numbers below have context.

Locust

A Python-based tool for performance testing that simulates thousands of concurrent users to stress-test web applications. Tests are written as plain Python code and can run distributed across multiple machines.

Independently observed

Vitest

Leader

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.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Locust

Open sourceFree tier
as of verify ↗

Vitest

Leader
Open sourceFree tier

Free and open source

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
CLI
Locust
Vitest
Deployment
Self-hosted
Locust
Vitest

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Locust

Not documented yet.

Vitest

Leader
2 total
  • Vite
  • Jest
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.