# Grafana k6

> Grafana k6 is an open source, self-hosted load testing tool from Grafana Labs, scripted in JavaScript, TypeScript.

- Canonical: https://perf.jmeter.ai/tools/grafana-k6/
- Review: https://perf.jmeter.ai/reviews/grafana-k6/
- Official: https://grafana.com/docs/k6/latest/
- Source: https://github.com/grafana/k6
- Vendor: Grafana Labs
- Category: Load Testing
- License: Open Source — Free; AGPL-3.0 license.
- Deployment: Self-hosted
- Status: Active
- Scripting: JavaScript, TypeScript
- Protocols: HTTP, HTTPS, WebSocket, gRPC
- OS support: Windows, macOS, Linux
- First released: 2017
- Latest release: v2.1.0 (2026-06-30)
- Last verified: 2026-08-11

## What it is
Grafana k6 executes performance tests from concise JavaScript or TypeScript scenarios. It supports thresholds, checks, extensions, and integration with Grafana observability products.

## Choose it when
- 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

## Look elsewhere when
- Teams unwilling to operate generators, results storage, and scaling

## Architecture
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.

## 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.

## Compare
- [JMeter vs k6](https://perf.jmeter.ai/vs/apache-jmeter-vs-grafana-k6/) — Pick JMeter if non-developers must record and edit plans in a GUI.
- [k6 vs Gatling](https://perf.jmeter.ai/vs/grafana-k6-vs-gatling/) — Prefer k6 if JavaScript/TypeScript is the team default.
- [Locust vs k6](https://perf.jmeter.ai/vs/locust-vs-grafana-k6/) — Choose Locust when Python is the team language and you want flexible user tasks.
- [Artillery vs k6](https://perf.jmeter.ai/vs/artillery-vs-grafana-k6/) — Prefer Artillery if your stack and plugins already revolve around Node.
- [Grafana k6 vs LoadRunner Professional](https://perf.jmeter.ai/vs/grafana-k6-vs-loadrunner-professional/) — The practical split is the cost model: Grafana k6 is open source, LoadRunner Professional is commercial.
- [Grafana k6 vs NeoLoad](https://perf.jmeter.ai/vs/grafana-k6-vs-neoload/) — The practical split is the cost model: Grafana k6 is open source, NeoLoad is commercial.
- [Grafana k6 vs BlazeMeter](https://perf.jmeter.ai/vs/grafana-k6-vs-blazemeter/) — The practical split is the cost model: Grafana k6 is open source, BlazeMeter is commercial.
- [Grafana k6 vs Tsung](https://perf.jmeter.ai/vs/grafana-k6-vs-tsung/) — The practical split is the authoring language: JavaScript, TypeScript for Grafana k6, Erlang, XML for Tsung.
- [Grafana k6 vs The Grinder](https://perf.jmeter.ai/vs/grafana-k6-vs-the-grinder/) — The practical split is the authoring language: JavaScript, TypeScript for Grafana k6, Jython, Java for The Grinder.
- [Grafana k6 vs Azure Load Testing](https://perf.jmeter.ai/vs/grafana-k6-vs-azure-load-testing/) — The practical split is the cost model: Grafana k6 is open source, Azure Load Testing is commercial.
- [Grafana k6 vs AWS Distributed Load Testing](https://perf.jmeter.ai/vs/grafana-k6-vs-aws-distributed-load-testing/) — The practical split is who runs the load generators: Grafana k6 on your own infrastructure, AWS Distributed Load Testing on the vendor's.
- [Grafana k6 vs Grafana Cloud k6](https://perf.jmeter.ai/vs/grafana-k6-vs-grafana-cloud-k6/) — The practical split is the cost model: Grafana k6 is open source, Grafana Cloud k6 is freemium.
- [Grafana k6 alternatives](https://perf.jmeter.ai/alternatives/grafana-k6/)

## FAQ
### 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.

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Curated by NaveenKumar Namachivayam (QAInsights) · methodology: https://perf.jmeter.ai/about/#methodology · corrections: https://github.com/QAInsights/Performance-Testing-Tools/issues/new?title=Tool%20submission%3A%20&body=Tool%20name%3A%20%0AOfficial%20URL%3A%20%0AWhat%20should%20be%20added%20or%20corrected%3F%20%0A