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SmartBear TestComplete vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

k6 Open Source
Ranking in Regression Testing Tools
10th
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Load Testing Tools (8th)
SmartBear TestComplete
Ranking in Regression Testing Tools
4th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
76
Ranking in other categories
Functional Testing Tools (7th), Test Automation Tools (5th)
 

Mindshare comparison

As of June 2025, in the Regression Testing Tools category, the mindshare of k6 Open Source is 0.5%, up from 0.1% compared to the previous year. The mindshare of SmartBear TestComplete is 9.7%, up from 9.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Regression Testing Tools
 

Featured Reviews

NalinGoonawardana - PeerSpot reviewer
Offers good scalability and has the ability to integrate with various systems and services
One area where k6 could improve is by introducing a GUI similar to JMeter. While k6 is a powerful tool for performance testing, it leans heavily towards coding. Having a GUI, even if it is a low-code approach, could make it more accessible to a broader audience. It would be beneficial to strike a balance where basic tasks can be performed graphically through a user-friendly interface, while still allowing the flexibility for more complex operations through code, similar to how JMeter operates. This could enhance the user experience and make k6 more approachable for those who may not be as comfortable with scripting.
Prakhar Goel - PeerSpot reviewer
Used for integration automation, user-based automation, and web automation
The solution's most valuable features are the drag-and-drop feature, keyword-driven approach, and reusability of the scripts. The solution has introduced a new feature that helps us identify objects we cannot normally identify. It gives you a fair idea of objects, resolving the object recognition issue. The solution can be used to perform different tests on different machines.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The standout feature of k6 is its strong focus on API performance testing."
"The tool's big advantage is that it is more performance-test oriented for experienced testers who know what they are doing. In a normal working setup, performance engineers frequently work with DevOps and development teams. For these teams, k6 Open Source's syntax is much simpler and easier to understand and apply in the working process."
"The ease-of-use and quality of the overall product are above average."
"Test items, project variables helps in managing automation suite and scheduling execution."
"The most valuable features of the SmartBear TestComplete are self-healing, they reduce the maintenance required. The different languages SmartBear TestComplete supports are good because some of our libraries are written in Python, JavaScript, and C#. It's very easy to put them all under one project and use them. The are other features that SmartBear TestComplete has but the competition widely has them as well."
"It's cross platform automation capabilities specially ranging across web, UNIX (via putty), and other systems."
"The initial setup is pretty easy and it's quick to deploy."
"The solution's most valuable features are the drag-and-drop feature, keyword-driven approach, and reusability of the scripts."
"The solution is great as a record and playback tool. It also has valuable regression testing."
"The most valuable features are the desktop and mobile modules."
 

Cons

"One area where k6 could improve is by introducing a GUI similar to JMeter."
"The solution needs to extend the possibilities so that we can test on other operating systems, platforms and publications for Android as well as iOS."
"To bring it up to a 10, I would be looking for the addition of some key functional API testing."
"Occasionally, image comparison results in failures, possibly due to issues with resolution or font size on the server side, which can be challenging to identify."
"Stability issues occurred only when connecting to the SourceSafe. Sometimes, after getting the latest version, the tool hangs and it should be reopened in order to recover."
"There could be API interfaces with this tool."
"In SmartBear TestComplete the integration with Jenkins could be easier. Additionally, some of the controls could have better customization options. For example, if a grid is used and it contains multiple controls within it, it can be a checkbox, radio button, or any kind of control, the way the Object Spy is operating currently there is a lot of room for improvement."
"Right now, when you buy the solution, you need to pay for one solution. You receive one set up and you install it and it's just in that one machine. It would be ideal if they could offer one subscription where you can connect to different machines with a group subscription."
"The pricing is the constraint."
 

Pricing and Cost Advice

Information not available
"The licensing costs are in the range of $1,000 to $3,000."
"The solution is around $1500. Some are perpetual licenses, and some get a yearly report card."
"The option we chose was around $2,000 USD."
"The solution's pricing is too high."
"The pricing is pretty reasonable."
"The price is less, compared to other products, such as QTP."
"SmartBear TestComplete is an expensive tool."
"Overall, for us, the cost of the TestComplete platform and the three extra modules is around $8,000."
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Top Industries

By visitors reading reviews
Computer Software Company
20%
Manufacturing Company
10%
Financial Services Firm
10%
Media Company
8%
Computer Software Company
18%
Manufacturing Company
14%
Financial Services Firm
13%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about k6 Open Source?
The standout feature of k6 is its strong focus on API performance testing.
What needs improvement with k6 Open Source?
One area where k6 could improve is by introducing a GUI similar to JMeter. While k6 is a powerful tool for performance testing, it leans heavily towards coding. Having a GUI, even if it is a low-co...
What is your primary use case for k6 Open Source?
k6 Open Source is a powerful tool, especially for API-level performance testing. Its integration capabilities and ease of use make it promising for a wider audience.
What do you like most about SmartBear TestComplete?
TestComplete has strong reporting capabilities. The reports they generate are really good.
What is your experience regarding pricing and costs for SmartBear TestComplete?
I am not involved in pricing or licensing; our management team handles these aspects.
What needs improvement with SmartBear TestComplete?
While using SmartBear TestComplete, we are fine with the current capabilities, however, it would be beneficial to improve some performance aspects, especially the image comparison feature. Occasion...
 

Also Known As

Load Impact
No data available
 

Overview

 

Sample Customers

rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
Cisco, J.P. Morgan, Boeing, McAfee, EMC, Intuit, and Thomson Reuters.
Find out what your peers are saying about SmartBear TestComplete vs. k6 Open Source and other solutions. Updated: June 2025.
859,129 professionals have used our research since 2012.