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k6

k6 tests performance with modern developer experience.

Free tierCloudPrice verified 2026-10-03Visit site ↗
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Our verdict

Who it's for

Teams with a strong developer focus, particularly those involved in API development and quality assurance, will find k6 most beneficial.

Who should look elsewhere

Learning curve

Pros

  • +Developer-friendly load testing
  • +JavaScript scripts
  • +Good CLI
  • +Open source
  • +Grafana integration

Cons

  • −Learning curve
  • −Cloud expensive
  • −Freemium
  • −Testing & QA
  • −Developer Tools

Key features

  • ✓Load testing
  • ✓JavaScript
  • ✓Developer-friendly
  • ✓CLI
  • ✓Cloud option
  • ✓Grafana

Pricing

PlanPriceBillingNotes
Open Source$0monthUnlimited VUs locally; Full feature set; CLI tool
Grafana Cloud Free$0month500 VUh/month; 14-day retention; Basic reporting
Pro$0.15month30-day retention; Advanced reporting; 8×5 support
Enterprise$25000monthVolume discounts; Custom SLA; Dedicated support

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