Brandwave

Bruno vs k6:Which is more popular?

In September 2026, k6 had more branded searches than Bruno among API testing tools worldwide. k6 had about 87,500 branded searches, while Bruno had 21,000. k6 made up 37.5% of all API testing tool searches we track, and Bruno accounted for 9%. When we asked ChatGPT and Google AI Overviews about API testing tools, Bruno appeared in four of the five answers and k6 in three. Bruno was mentioned before k6 in every answer that named either.

Among API testing tools worldwide in September 2026

Who do people search for more?

k6, about 4 searches for every 1 for Bruno

k6 87.5K searchesBruno 21K searches

Who does AI mention more?

Bruno, mentioned in 4 of 5 answers, k6 in 3

Bruno in 4 of 5k6 in 3 of 5

Who does AI recommend more?

Bruno, named ahead of k6 in 4 of 4 answers

Bruno first in 4k6 never first

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Top API testing tools in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Bruno was mentioned in four out of five: in all three ChatGPT answers and in one of the two 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. Bruno was listed before k6 in every answer that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Postman1st
  2. Bruno2nd
  3. Karate3rd
  4. SoapUI4th
  5. Insomnia5th
  6. Playwright6th
  7. Katalon7th
  8. k68th
  9. Hoppscotch9th

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Postman5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • SoapUI4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Bruno4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Karate4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • k63 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Playwright2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Katalon2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Insomnia2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Hoppscotch1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers

See every answer about API testing tools

5 answers

Brands are shown in the order each answer named them. The survey took place in the United States on October 20, 2026.

Is Bruno or k6 more popular in search?

This chart shows how often people search Google for Bruno and k6 by name. Each line represents a brand's share of searches for all nine API testing tools we track, month by month, from English-language searches worldwide.

Bruno and k6 among API testing tools worldwide, by month

Share of searches by month for k6, Bruno. The figures are in the table below the chart.

View monthly share of searches table
Monthk6PlaywrightSoapUIPostmanBrunoKatalonInsomniaKarateHoppscotch
Oct 202526.3%15.4%18.3%13.2%9.3%6.7%8.9%1.3%0.77%
Nov 202529.9%17.9%17%13.2%7%6.2%6.9%1.4%0.71%
Dec 202528.5%19.2%16.2%13.3%8.1%5.9%6.7%1.3%0.7%
Jan 202630%20.6%13.9%11.9%8.6%6.2%6.7%1.2%0.87%
Feb 202629.9%19.4%13.9%13.2%10.5%5.1%5.7%1.4%0.89%
Mar 202627.4%18.5%15.3%11.9%11.6%5.6%7.4%1.3%1%
Apr 202629.3%20.1%13.6%13%10.3%6.1%5.5%1.1%0.89%
May 202631.1%19.2%14.4%11.2%11.2%5.3%5.6%1.1%0.8%
Jun 202631.3%21.7%14.3%11.6%9.1%5.2%4.8%1.2%0.91%
Jul 202632.6%19.9%12.2%12%11.6%4.4%5.1%1.2%0.93%
Aug 202633.1%22.1%12.4%11.8%9.6%4.5%4.3%1.1%1.1%
Sep 202637.5%21%11.6%9.8%9%5.2%3.9%0.99%0.91%

How has the Bruno and k6 comparison changed over the last 12 months?

3 findings
  • k6 was ahead of Bruno in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Bruno’s share of searches among API testing tools worldwide moved from 9.3% to 9%, and its estimated monthly branded searches moved from 25.1K to 21K.
  • 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.

How did search popularity change for API testing tools worldwide in September 2026?

2 changes

  1. In September 2026, k6 gained share of searches among API testing tools worldwide, from 33.1% to 37.5%.

  2. In September 2026, Bruno lost share of searches among API testing tools worldwide, from 9.6% to 9%.

How are branded searches counted?

6 search terms

Brandwave collects information about searches that people make online using Bruno’s and k6’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.

Bruno

3 branded search terms

  • api testing bruno
  • bruno api
  • bruno api testing

k6

3 branded search terms

  • grafana k6
  • k6
  • k6 load testing

How the Brand Demand Index is measured

Other head-to-heads among API testing tools

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