k6 Open Source
Model traffic in JavaScript and measure how an API or application behaves under load.
What’s included for free?
The open-source CLI runs on your infrastructure without a provider virtual-user quota. Actual load is limited by available compute; Grafana Cloud testing is a separate service.
Provider information ↗Checked 2026-10-13
Before you use it
AGPL-3.0 copyleft licence; modified versions used over a network carry corresponding-source obligations. Hosted services and third-party components have separate terms.
Provider terms can change. Check current pricing and usage rights before starting a project.