k6 is a full-featured, configurable load testing tool from Grafana, built for developers and QA engineers to test the performance and reliability of APIs and web applications. It uses the Go-powered Sobek JavaScript engine, allowing users to write test scripts in JavaScript with optional TypeScript support. Designed for automation and CI/CD, k6 offers high performance, detailed metrics, and smooth Grafana integration.
The recent v1.0 release brings long-term stability, first-class TypeScript support, and improved extensibility through plugins and custom modules.