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Head-to-head · Performance Testing Software

Grafana k6 vs OpenText Core Performance Engineering

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Grafana k6 #1 in Performance Testing Software 9.3/10 Free plan · 14-day trial Free planFree trial✓ 5 of 5 features Visit Grafana k6

Grafana k6 leads on 0 checks, OpenText Core Performance Engineering on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGrafana k6 · 9.3/10
  • Free planonly Grafana k6
  • Free trialonly Grafana k6

Grafana k6 scores higher on our rubric for performance testing software: 9.3 against 9.2 out of 10; our editors rank them #1 and #2.

Grafana k6 is the better fit for open-source teams building scripted test suites. OpenText Core Performance Engineering is the better fit for enterprises needing cloud regions and AI analysis.

  • Grafana k6 fits best

    Open-source teams building scripted test suites

  • OpenText Core Performance Engineering fits best

    Enterprises needing cloud regions and AI analysis

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. How we rank.

Side by side

Feature Grafana k6 9.3/10 Visit ↗ OpenText Core Performance Engineering 9.2/10 Visit ↗
At a glance
Editor score 9.3 9.2
Ranking #1 in Performance Testing Software #2 in Performance Testing Software
Best for Open-source teams building scripted test suites Enterprises needing cloud regions and AI analysis
Pricing model Free plan + paid Paid
Starting price Free plan · 14-day trial Pricing on request
Free plan ✓ (best) Not checked yet
Free trial 14 days —
Deployment Cloud, Self-hosted Cloud
Platforms Web, Windows, macOS, Linux Web
Support Email, Community, Docs Tickets, Community · 24/7
Integrations 6 integrations 5 integrations
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Grafana k6 5/5 · OpenText Core Performance Engineering 5/5
Load testing ✓ ✓
Stress testing ✓ ✓
Browser-based testing ✓ ✓
Distributed load ✓ ✓
API testing ✓ ✓
Specs
Deployment model Hybrid Hybrid
Max virtual users Not checked yet Not checked yet
Our review
Pros
  • JavaScript and TypeScript authoring with local execution
  • HTTP, API, browser, distributed, and Kubernetes testing
  • Integrations with Prometheus, Datadog, Grafana Cloud, and others
  • Distributed testing across more than 40 cloud regions
  • Combines browser, REST API, JMeter, Gatling, and mobile web testing
  • AI-assisted scripting, predictive analytics, and network virtualization
Cons
  • Cloud Enterprise requires a minimum $25,000 annual commitment
  • Browser testing relies on Chromium automation
  • Cloud Pro includes 500 virtual user hours per month
  • Usage-based pricing requires contacting sales
  • Hybrid deployments may require on-premises load generators
  • Its broad scope may exceed the needs of lightweight testing teams
Our verdict

Grafana k6 is an open-source load and performance testing tool for developers, SREs, and QA teams. Tests are scripted in JavaScript or TypeScript and can run locally, across distributed machines, on Kubernetes, or through Grafana Cloud k6.…

Read the review →

OpenText Core Performance Engineering is a cloud-based service for development, QA, and performance engineering teams. It covers planning, test creation, execution, monitoring, analysis, and reporting for web, API, mobile web, and…

Read the review →
  1. Grafana k6Performance Testing Software 9.3Free plan · 14-day trial
  2. OpenText Core Performance EngineeringPerformance Testing Software 9.2Pricing on request

Strengths and trade-offs

  • Grafana k6 — where it wins

    • JavaScript and TypeScript authoring with local execution
    • HTTP, API, browser, distributed, and Kubernetes testing
    • Integrations with Prometheus, Datadog, Grafana Cloud, and others

    Where it doesn't

    • Cloud Enterprise requires a minimum $25,000 annual commitment
    • Browser testing relies on Chromium automation
    • Cloud Pro includes 500 virtual user hours per month
  • OpenText Core Performance Engineering — where it wins

    • Distributed testing across more than 40 cloud regions
    • Combines browser, REST API, JMeter, Gatling, and mobile web testing
    • AI-assisted scripting, predictive analytics, and network virtualization

    Where it doesn't

    • Usage-based pricing requires contacting sales
    • Hybrid deployments may require on-premises load generators
    • Its broad scope may exceed the needs of lightweight testing teams
  • Grafana k69.3/10 · Free plan · 14-day trial

    A scriptable performance testing tool with local, distributed, browser, and hosted execution.

    Visit Grafana k6Full verdict →
  • OpenText Core Performance Engineering9.2/10 · Pricing on request

    A broad hybrid performance-testing suite for enterprise web, API, and mobile workloads.

    Visit OpenTextFull verdict →

More comparisons

Guides on performance testing software

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update