Catalog comparison
ArtilleryLocust
Side-by-side facts from the TestGuild Tool Matcher catalog. Empty cells mean the catalog does not list that attribute — not that the product lacks it.
A scalable, flexible and easy-to-use platform that contains everything you need for production-grade load testing. Artillery is a modern load testing platform with serverless load generators, cloud-native architecture, and Playwright-powered browser testing for comprehensive web application performance testing.
An open source performance/load testing tool that lets you define tests in regular Python code, with support for HTTP and other protocols.
At a glance
Primary testing surface
Artillery
Performance
Locust
Performance
Primary capability
Artillery
Performance
Locust
Performance
License and pricing
Artillery
freemium · open source
Locust
free · open source
Free trial
Artillery
No
Locust
No
Free-tier limit
Artillery
30 reports/month, 2 users
Locust
Not listed in catalog
Complexity
Artillery
beginner
Locust
intermediate
Team fit
Artillery
enterprise, large, medium, small
Locust
large, medium, small
Test authoring languages
Artillery
Any, JavaScript, Node.js, TypeScript
Locust
Python
Supported platforms
Artillery
Any Cloud Platform, AWS, Azure, GraphQL Services, gRPC, HTTP APIs, Kafka, Playwright Browser Testing, Serverless Architecture, SOAP, Socket.IO, Web Applications, WebSockets
Locust
Any OS, Python
MCP server
Artillery
Yes
Locust
No
Key features (catalog)
Artillery
20+ integrations with monitoring tools, Advanced reporting and analytics, API load testing, Artillery Cloud for team collaboration, Auto-scaling load generators, AWS and Azure cloud integration, Browser automation at scale with thousands of headless browsers, Browser trace recording and analysis, Browser-based load testing, CI/CD integration with GitHub Actions, Jenkins, GitLab +39 more
Locust
CI/CD integration, Command-line interface, Customizable reporting, Distributed load testing, Event-based architecture, Load testing, Performance testing, Pluggable architecture, Protocol-agnostic testing capability, Python-based test scenarios +6 more
Limitations (catalog)
Artillery
Cloud-based execution model, JavaScript/Node.js ecosystem dependency, Limited support for legacy protocols, Primarily focused on performance testing, Requires understanding of load testing concepts, Some advanced features require paid plans
Locust
Event loop based - not true threading, Limited built-in protocols (requires custom client for non-HTTP), Memory constraints with very large number of users, Python knowledge required
| Attribute | Artillery | Locust |
|---|---|---|
| Primary testing surface | Performance | Performance |
| Primary capability | Performance | Performance |
| License and pricing | freemium · open source | free · open source |
| Free trial | No | No |
| Free-tier limit | 30 reports/month, 2 users | Not listed in catalog |
| Complexity | beginner | intermediate |
| Team fit | enterprise, large, medium, small | large, medium, small |
| Test authoring languages | Any, JavaScript, Node.js, TypeScript | Python |
| Supported platforms | Any Cloud Platform, AWS, Azure, GraphQL Services, gRPC, HTTP APIs, Kafka, Playwright Browser Testing, Serverless Architecture, SOAP, Socket.IO, Web Applications, WebSockets | Any OS, Python |
| MCP server | Yes | No |
| Key features (catalog) | 20+ integrations with monitoring tools, Advanced reporting and analytics, API load testing, Artillery Cloud for team collaboration, Auto-scaling load generators, AWS and Azure cloud integration, Browser automation at scale with thousands of headless browsers, Browser trace recording and analysis, Browser-based load testing, CI/CD integration with GitHub Actions, Jenkins, GitLab +39 more | CI/CD integration, Command-line interface, Customizable reporting, Distributed load testing, Event-based architecture, Load testing, Performance testing, Pluggable architecture, Protocol-agnostic testing capability, Python-based test scenarios +6 more |
| Limitations (catalog) | Cloud-based execution model, JavaScript/Node.js ecosystem dependency, Limited support for legacy protocols, Primarily focused on performance testing, Requires understanding of load testing concepts, Some advanced features require paid plans | Event loop based - not true threading, Limited built-in protocols (requires custom client for non-HTTP), Memory constraints with very large number of users, Python knowledge required |
How the trade-offs apply to your team
Guidance below is inferred only from catalog differences. It is not a winner pick.
Consider Artillery if…
- you need coverage for Any Cloud Platform, AWS, Azure, GraphQL Services
- your team writes tests in Any, JavaScript, Node.js, TypeScript
- you want a lower-complexity tool
- you want an MCP server for AI assistants
Consider Locust if…
- you need coverage for Any OS, Python
- your team writes tests in Python
- you care about CI/CD integration and Command-line interface
Questions to verify before choosing
- Confirm current pricing and packaging on the Artillery and Locust websites.
- Trial both tools against a real slice of your application, not a demo site.
- Verify the exact browser, device, or OS matrix you must support.