TOOL SIGNAL / ACTIVE

Grafana k6

Grafana Labs

Load Testing Open Source Self-hosted ♥ pick ✓ pick
Official site ↗ Source repo ↗
Pricing model
Free; AGPL-3.0 license.
First released
2017
Latest release
v2.1.0
Last verified
Answer

Grafana k6 is an open-source, developer-friendly, and extensible performance testing tool designed to help engineering teams (developers, QA engineers, SDETs, and SREs) catch performance issues early, simulate realistic user behavior, and improve the reliability, performance, and scalability of applications and infrastructure.

About

Grafana k6 is an open-source, developer-friendly, and extensible performance testing tool designed to help engineering teams (developers, QA engineers, SDETs, and SREs) catch performance issues early, simulate realistic user behavior, and improve the reliability, performance, and scalability of applications and infrastructure.

Best for

  • Load Testing scenarios across typical web and service stacks
  • Teams that prefer open-source licensing and self-hosting options
  • Groups comfortable scripting in JavaScript, TypeScript

Not the best fit when

  • Teams unwilling to operate generators, results storage, and scaling

Architecture and concurrency

Grafana k6 is commonly operated as self-hosted software with scenario authoring in JavaScript, TypeScript. Concurrency and distribution depend on how you size workers or injectors.

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Features

  • Test scripts written in JavaScript or TypeScript
  • Support for multiple execution modes: local, distributed (e.g., in a Kubernetes cluster), and cloud
  • Optimized for minimal resource consumption for high-load tests like spike, stress, or soak tests
  • Configurable options such as thresholds, metrics, and lifecycle hooks
  • Ability to ramp virtual users (VUs) up and down during tests

Latest release

v2.1.0 · 2026-06-30

The v2.1.0 release includes an opt-in feature-flag system (via --features, K6_FEATURES, and k6 features command), a new k6 cloud test list subcommand, and a context-level proxy option for browser contexts.

Pricing

Grafana k6 is open-source (free). Grafana Cloud k6 offers a free tier (limited to 500 virtual user hours per month), a pay-as-you-go model ($0.15 per virtual user hour), and enterprise options with volume discounts and annual commits.

Specs

Scripting
JavaScriptTypeScript
Protocols
HTTPHTTPSWebSocketgRPC
Operating systems
WindowsmacOSLinux
Tags
javascriptcliobservability
Repo health
★ 31362 · last push 2026-08-31

Sources

SHOW SOURCES

LAST VERIFIED · 2026-08-11 · GROUNDED VIA EXA · CURATED BY NAVEENKUMAR NAMACHIVAYAM

Frequently asked

ANSWER-SHAPED
Who is Grafana k6 for?

Grafana k6 is best for engineers designing load, stress, and performance tests for web and service systems. It is open source, so teams can self-host and extend it. Vendor: Grafana Labs. Deployment model: self-hosted. Free; AGPL-3.0 license. Confirm details against the official site and a short proof-of-concept in your environment.

How does Grafana k6 differ from Apache JMeter?

Compared with Apache JMeter, scripting centers on JavaScript, TypeScript rather than Java, Groovy. Grafana k6 lists protocols HTTP, HTTPS, WebSocket, gRPC; Apache JMeter lists HTTP, HTTPS, JDBC, JMS, FTP, TCP. Status is active versus active. Use the Test Rig to compare full specs side by side before a proof-of-concept.

What scripting language and concurrency model does Grafana k6 use?

Grafana k6 uses JavaScript, TypeScript for scripting or scenario definition. Runtime model: code-first scenarios where virtual users execute scripted behavior under load. OS support: Windows, macOS, Linux. Protocols: HTTP, HTTPS, WebSocket, gRPC. Match these to how your team already authors tests and which systems you must drive under load.

What is the cloud or enterprise path for Grafana k6?

Grafana k6 is primarily self-hosted; teams typically run generators on their own machines, CI runners, or private cloud. Plan for generator capacity, network access to targets, and result storage yourself. As open source, commercial support or hosted siblings may exist separately. Check the official site. Pricing note: Free; AGPL-3.0 license.

What are known limitations of Grafana k6?

Grafana k6 limitations to weigh: self-hosted tools require you to provision, scale, and observe load generators yourself. Status: active. Always validate against your target protocols and scale with a proof-of-concept. Confirm details against the official site and a short proof-of-concept in your environment.