OpenText LoadRunner vs Grafana k6

Quote on request

From $19 per month (Grafana Cloud Pro platform fee; k6 usage is billed on top)

Licensed by peak virtual users with protocol bundles priced separately. Historically among the most expensive tools in testing.

Self-hosted is free and unlimited. On Grafana Cloud the free tier includes 500 virtual-user-hours a month, then k6 bills from $0.150 per virtual-user-hour on top of the $19 Pro platform fee — the VU-hours, not the platform fee, are where budgets go.

Community edition with a 50-virtual-user limit.

The k6 CLI is fully open source with no virtual-user limits when self-run.

Established

OpenText · since 1993

Category standard

Grafana Labs · since 2016

• The broadest protocol coverage available anywhere.
• Extremely mature analysis and correlation tooling.
• Accepted by enterprise architecture and audit functions without argument.

• Excellent resource efficiency — thousands of virtual users from one modest machine.
• Thresholds make performance a build gate rather than a report nobody reads.
• Native Grafana and Prometheus integration ties load results to server-side metrics.

• Very expensive, and the protocol-bundle licensing model is hard to predict.
• Dated tooling and a steep learning curve; specialists are a distinct job role.
• Poor fit for continuous, developer-run performance testing.

• The JavaScript runtime is not Node — no npm modules unless bundled, which surprises people.
• Browser-level load testing exists but is much heavier and less mature than protocol-level testing.
• Distributed execution requires either the cloud product or your own orchestration.

Large enterprises with legacy protocol requirements and an existing performance-engineering team.

Engineering teams that want performance regression tests running in CI.