Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate
Key facts
- Vendor
- Grafana Labs
- Pricing
- Freemium — Free
- Free tier
- Yes
- Platforms
- Mac, Windows, Linux, Api
- Best for
- Developers, Sre
- Editor rating
- 4.6 / 5
- Founded
- 2017
- Headquarters
- Stockholm, Sweden
What is k6?
k6 is a software testing tool from Grafana Labs. k6 is an open-source load-testing tool with scripting in JavaScript, plus a cloud option.
k6 uses freemium pricing and offers a free tier you can start on without a credit card. Free.
It's best suited to developers, sre and runs on Mac, Windows, Linux, Api.
Standout strengths include developer-friendly load testing, open source, ci integration. Worth weighing: scripting required.
k6 pricing
Pros
- Developer-friendly load testing
- Open source
- CI integration
Cons
- Scripting required
k6 vs alternatives
Ready to try k6?
Start free and see if it fits your workflow.
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Frequently asked questions
What is k6?
k6 is an open-source load-testing tool with scripting in JavaScript, plus a cloud option.
How much does k6 cost?
k6 is freemium-priced. It has a free tier.
Does k6 have a free trial?
k6 offers a free tier rather than a time-limited trial.
What platforms does k6 support?
k6 is available on Mac, Windows, Linux, Api.