--- title: "k6 vs SoapUI: Which is searched more?" description: "Is k6 or SoapUI more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the API testing tools set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/k6-vs-soapui" publisher: "Brandwave" --- # k6 vs SoapUI: Which is searched more? Is k6 or SoapUI more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the API testing tools set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: k6 and SoapUI - **Competitive set**: API testing tools - **Market**: Global - **Month measured**: Sep 2026 - **k6 Share of Search**: 37.5% - **SoapUI Share of Search**: 11.6% ## Is k6 or SoapUI more popular in search? - In September 2026, k6 had more branded searches than SoapUI among API testing tools worldwide. k6 had about 87,500 branded searches, while SoapUI had 27,200. k6 made up 37.5% of all API testing tool searches we track, and SoapUI accounted for 11.6%. - k6 was ahead of SoapUI in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, k6’s share of searches among API testing tools worldwide moved from 26.3% to 37.5%, and its estimated monthly branded searches moved from 71.5K to 87.5K. - Across the 12 months ending September 2026, SoapUI’s share of searches among API testing tools worldwide moved from 18.3% to 11.6%, and its estimated monthly branded searches moved from 49.6K to 27.2K. ## Top API testing tools in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, SoapUI was mentioned in four out of five: in two of the three ChatGPT answers and in both Google AI Overviews. k6 was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. SoapUI was listed before k6 in three out of five answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Postman | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Bruno | 2nd | 3 of 3 | 1 of 2 | 4 of 5 | | Karate | 3rd | 2 of 3 | 2 of 2 | 4 of 5 | | SoapUI | 4th | 2 of 3 | 2 of 2 | 4 of 5 | | Insomnia | 5th | 0 of 3 | 2 of 2 | 2 of 5 | | Playwright | 6th | 2 of 3 | 0 of 2 | 2 of 5 | | Katalon | 7th | 1 of 3 | 1 of 2 | 2 of 5 | | k6 | 8th | 3 of 3 | 0 of 2 | 3 of 5 | | Hoppscotch | 9th | 0 of 3 | 1 of 2 | 1 of 5 | ## Every AI answer about API testing tools - Asked ChatGPT "Which API testing tool should I use?": 1. Postman, 2. Bruno, 3. Karate, 4. k6 - Asked ChatGPT "What are the best API testing tools?": 1. Postman, 2. Bruno, 3. Playwright, 4. Karate, 5. k6, 6. SoapUI - Asked ChatGPT "What's the best API testing tool for qa teams?": 1. Postman, 2. Bruno, 3. Katalon, 4. SoapUI, 5. Playwright, 6. k6 - Searched Google, AI Overview "api testing tools": 1. Postman, 2. Insomnia, 3. Bruno, 4. Hoppscotch, 5. Karate, 6. SoapUI - Searched Google, AI Overview "api test software": 1. Postman, 2. SoapUI, 3. Insomnia, 4. Karate, 5. Katalon Brands are listed in the order each answer named them. The answers were collected in the United States on October 20, 2026. ## How did search popularity change for API testing tools worldwide in September 2026? - In September 2026, k6 gained share of searches among API testing tools worldwide, from 33.1% to 37.5%. - In September 2026, SoapUI lost share of searches among API testing tools worldwide, from 12.4% to 11.6%. ## Month by month | Month | k6 estimated searches | k6 Share of Search | k6 rank | SoapUI estimated searches | SoapUI Share of Search | SoapUI rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 71.5K | 26.3% | 1 | 49.6K | 18.3% | 2 | | Nov 2025 | 71.5K | 29.9% | 1 | 40.6K | 17% | 3 | | Dec 2025 | 58.5K | 28.5% | 1 | 33.2K | 16.2% | 3 | | Jan 2026 | 71.5K | 30% | 1 | 33.3K | 13.9% | 3 | | Feb 2026 | 71.5K | 29.9% | 1 | 33.2K | 13.9% | 3 | | Mar 2026 | 72.5K | 27.4% | 1 | 40.6K | 15.3% | 3 | | Apr 2026 | 71.5K | 29.3% | 1 | 33.2K | 13.6% | 3 | | May 2026 | 71.5K | 31.1% | 1 | 33.2K | 14.4% | 3 | | Jun 2026 | 72.5K | 31.3% | 1 | 33.2K | 14.3% | 3 | | Jul 2026 | 72.5K | 32.6% | 1 | 27.2K | 12.2% | 3 | | Aug 2026 | 72.5K | 33.1% | 1 | 27.2K | 12.4% | 3 | | Sep 2026 | 87.5K | 37.5% | 1 | 27.2K | 11.6% | 3 | ## How each brand is measured Brandwave collects information about searches that people make online using k6’s and SoapUI’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **k6**: Measured on the search terms “grafana k6”, “k6” and “k6 load testing”, summed into one figure. - **SoapUI**: Measured on the search terms “api testing soapui”, “soapui”, “soapui app” and “soapui software”, summed into one figure. - [k6 profile](/demand/global-en/brands/k6) - [SoapUI profile](/demand/global-en/brands/soapui) - [All API testing tools worldwide](/demand/global-en/categories/api-testing-tools): The set both shares are measured inside, 9 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is k6 or SoapUI more popular in search? In September 2026, k6 had more branded searches than SoapUI among API testing tools worldwide. k6 had about 87,500 branded searches, while SoapUI had 27,200. k6 made up 37.5% of all API testing tool searches we track, and SoapUI accounted for 11.6%. ## Cite this page Brandwave. "k6 vs SoapUI: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/k6-vs-soapui This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/k6-vs-soapui. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.