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BlazeMeter vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 6, 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

BlazeMeter
Ranking in Load Testing Tools
3rd
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
50
Ranking in other categories
Performance Testing Tools (2nd), Functional Testing Tools (9th), API Testing Tools (8th), Test Automation Tools (7th)
k6 Open Source
Ranking in Load Testing Tools
7th
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Regression Testing Tools (9th)
 

Mindshare comparison

As of February 2026, in the Load Testing Tools category, the mindshare of BlazeMeter is 7.9%, down from 14.8% compared to the previous year. The mindshare of k6 Open Source is 4.4%, up from 3.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools Market Share Distribution
ProductMarket Share (%)
BlazeMeter7.9%
k6 Open Source4.4%
Other87.7%
Load Testing Tools
 

Featured Reviews

NP
Software Engineer at a tech vendor with 1,001-5,000 employees
Performance testing for peak retail events has become faster and delivers reliable user load insights
BlazeMeter offers numerous features, but the ones that stand out to me include its ease of use, predefined configurations for high-scale performance testing that can be executed quickly, AI-powered testing, scriptless testing, and accurate API testing with an auto-correction plugin to ensure the accuracy of the tests performed. While I cannot pinpoint a single favorite feature, I find myself using parallel execution frequently because this feature allows multiple tests to be run at once, greatly enhancing my workflow. BlazeMeter effectively handles dependency in microservice architecture, for example, linking one API to another to manage response flows, such as the login and registration APIs, which flows efficiently through BlazeMeter. BlazeMeter has positively impacted my organization by reducing the time required for testing due to its robust features that yield efficient results. Unlike JMeter, which has limitations on user simulations, BlazeMeter allows me to test any number of users, helping my e-commerce website manage unpredictable traffic loads effectively while delivering accurate results I can trust to improve my systems.
ArtemCheremisin - PeerSpot reviewer
Performance Test Engineer at BETBY
Lighter on the RAM and has native Grafana support
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. Recently, I had a case where I was using another tool, and there wasn't enough memory for it because it required more RAM. k6 Open Source, on the other hand, is lighter and doesn't have a UI, which is beneficial. An engineer I was training could use k6 Open Source scripts even without my help. The tool is more efficient and has native support with Grafana, as both are developed by the same company. This integration enhances monitoring and loss ratio tracking. Thanks to its intelligent GUI, k6 Open Source's design is simpler, particularly for complex scenarios. When we need to manage hundreds of thousands or millions of transactions per minute, the solution becomes a game-changer compared to JMeter.

Quotes from Members

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

Pros

"The feature that stands out the most is their action groups. They act like functions or methods and code, allowing us to reuse portions of our tests. That also means we have a single point for maintenance when updates are required. Instead of updating a hundred different test cases, we update one action group, and the test cases using that action group will update."
"The user interface is good."
"The most valuable feature of the solution is its ability to run high loads and generate reports."
"Using cloud-based load generators is highly valuable to us, as we can test from outside our network and increase load generation without having to upscale our hardware as much. The cloud load generator is there when we need it and is the feature we leverage the most."
"There is a repository of all the scripts that we have created. You can go back and compare tests to see what the tests looked like. If I want to go and compare something with whatever happened six months or one year back, I can do that."
"It's a great platform because it's a SaaS solution, but it also builds the on-premises hosting solutions, so we have implemented a hybrid approach. BlazeMeter sets us up for our traditional hosting platforms and application stack as well as the modern cloud-based or SaaS-based application technologies."
"Its most valuable features are its strong community support, user-friendly interface, and flexible capacity options."
"The most valuable features of the solution stem from the fact that BlazeMeter provides easy access to its users while also ensuring that its reporting functionalities are good."
"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 standout feature of k6 is its strong focus on API performance testing."
 

Cons

"A possible improvement could be the integration with APM tools."
"BlazeMeter has room for improvement in terms of its integration with GitLab, particularly in the context of CI/CD processes. While it has multiple integrations available, the level of integration with GitLab may need further enhancements. It is known to work well with Git and Jenkins, although the extent of compatibility with GitLab is uncertain."
"One problem, while we are executing a test, is that it will take some time to download data. Let's say I'm performance testing with a high-end load configuration. It takes a minimum of three minutes or so to start the test itself. That's the bad part of the performance testing... every time I rerun the same test, it is downloaded again... That means I have to wait for three to four minutes again."
"The only downside of BlazeMeter is that it is a bit expensive."
"BlazeMeter should improve or make available some features out of the box that JMeter requires customization for."
"The should be some visibility into load testing. I'd like to capture items via snapshots."
"The product currently doesn't allow users to run parallel thread groups, making it an area that should be considered for improvement."
"BlazeMeter meets my needs very well, but an area for improvement would be the ability to execute multiple projects simultaneously."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"My company has opted for a pay-as-you-go model, so we don't make use of the free version of the product."
"I would rate the pricing a three out of ten, where one is very cheap, and ten is very expensive."
"It's consumption-based pricing but with a ceiling. They're called CVUs, or consumption variable units. We can use API testing, GUI testing, and test data, but everything gets converted into CVUs, so we are free to use the platform in its entirety without getting bogged down by a license for certain testing areas. We know for sure how much we are going to spend."
"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"The solution is free and open source."
"When compared with the cost of the licenses of other tools, BlazeMeter's license price is good."
"We pay a yearly licensing fee for the solution."
"It is an averagely priced product."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
17%
Computer Software Company
11%
Retailer
9%
Manufacturing Company
6%
Computer Software Company
14%
Financial Services Firm
10%
Retailer
7%
Media Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise23
No data available
 

Questions from the Community

How does BlazeMeter compare with Apache JMeter?
Blazemeter is a continuous testing platform that provides scriptless test automation. It unifies functional and performance testing, enabling users to monitor and test public and private APIs. We ...
What do you like most about BlazeMeter?
It has a unique programming dashboard that is very user-friendly.
What is your experience regarding pricing and costs for BlazeMeter?
BlazeMeter's pricing depends on the type of account used. They offer multiple account types, with cost variations based on features accessible under each account.
 

Also Known As

JMeter Cloud
Load Impact
 

Overview

 

Sample Customers

DIRECTV, GAP, MIT, NBCUniversal, Pfizer, StubHub
rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
Find out what your peers are saying about BlazeMeter vs. k6 Open Source and other solutions. Updated: December 2025.
881,665 professionals have used our research since 2012.