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Head-to-head · API Testing Tools

SoapUI vs Karate

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score SoapUI #3 in API Testing Tools 9.0/10 Free plan Free plan✓ 6 of 6 features Visit SmartBear
Karate #4 in API Testing Tools 8.9/10 Free plan Free plan✓ 6 of 6 features Visit Karate

SoapUI leads on 0 checks, Karate on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSoapUI · 9.0/10
  • Free planboth

SoapUI scores higher on our rubric for api testing tools: 9.0 against 8.9 out of 10; our editors rank them #3 and #4.

SoapUI is the better fit for teams testing SOAP, REST, and service performance. Karate is the better fit for engineering teams building automated API test suites.

  • SoapUI fits best

    Teams testing SOAP, REST, and service performance

  • Karate fits best

    Engineering teams building automated API test suites

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. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature SoapUI 9.0/10 Visit ↗ Karate 8.9/10 Visit ↗
At a glance
Editor score 9.0 8.9
Ranking #3 in API Testing Tools #4 in API Testing Tools
Best for Teams testing SOAP, REST, and service performance Engineering teams building automated API test suites
Pricing model Free Free plan + paid
Starting price Free $100/user/yr
Free plan ✓ ✓
Free trial — —
Deployment Desktop Self-hosted, Desktop
Platforms Windows, macOS, Linux Windows, macOS, Linux
Support Community, Docs Email, Community, Docs
Integrations 9 integrations 40+ integrations
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features SoapUI 6/6 · Karate 6/6
GraphQL support ✓ ✓
SOAP support ✓ ✓
Scheduled runs ✓ ✓
CI/CD integration ✓ ✓
Mock server ✓ ✓
Contract testing ✓ ✓
Specs
Included requests Not checked yet Not checked yet
Our review
Pros
  • Covers REST, SOAP, GraphQL, functional, regression, and performance testing
  • Includes service mocking, contract coverage, assertions, and schema validation
  • Runs locally on Windows, macOS, and Linux with command-line execution
  • Tests REST, GraphQL, and SOAP APIs with Gherkin-based authoring
  • Combines mocks, contract testing, reports, and parallel execution
  • Supports CI/CD, self-hosting, and Gatling performance testing
Cons
  • Desktop-focused rather than a browser-based testing platform
  • Enterprise testing capabilities are provided through separate ReadyAPI products
  • Groovy and JavaScript scripting may require scripting knowledge
  • Advanced IDE and Xplorer capabilities are split across paid tiers
  • The Pro plan costs $640 per user per year
  • Enterprise licensing uses custom commercial pricing
Our verdict

SoapUI is an open-source desktop API testing tool for developers and testers working with REST, SOAP, HTTP, and GraphQL services. It is suited to teams that need one application for functional, regression, interoperability, performance,…

Read the review →

Karate is an open-source test automation framework for developers and QA teams building automated suites for REST, GraphQL, and SOAP APIs. Its Gherkin-based syntax supports JSON and XML assertions, schema validation, data-driven scenarios,…

Read the review →
  1. SoapUIAPI Testing Tools 9.0Free plan
  2. KarateAPI Testing Tools 8.9Free plan

Strengths and trade-offs

  • SoapUI — where it wins

    • Covers REST, SOAP, GraphQL, functional, regression, and performance testing
    • Includes service mocking, contract coverage, assertions, and schema validation
    • Runs locally on Windows, macOS, and Linux with command-line execution

    Where it doesn't

    • Desktop-focused rather than a browser-based testing platform
    • Enterprise testing capabilities are provided through separate ReadyAPI products
    • Groovy and JavaScript scripting may require scripting knowledge
  • Karate — where it wins

    • Tests REST, GraphQL, and SOAP APIs with Gherkin-based authoring
    • Combines mocks, contract testing, reports, and parallel execution
    • Supports CI/CD, self-hosting, and Gatling performance testing

    Where it doesn't

    • Advanced IDE and Xplorer capabilities are split across paid tiers
    • The Pro plan costs $640 per user per year
    • Enterprise licensing uses custom commercial pricing
  • SoapUI9.0/10 · Free plan

    A broad, free API testing desktop tool for functional, contract, performance, and load work.

    Visit SmartBearFull verdict →
  • Karate8.9/10 · Free plan

    A broad, automation-focused API framework with a valuable free tier and paid tooling add-ons.

    Visit KarateFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update