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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
6.9
Number of Reviews
49
Ranking in other categories
Performance Testing Tools (3rd), Functional Testing Tools (9th), API Testing Tools (4th), Test Automation Tools (6th)
k6 Open Source
Ranking in Load Testing Tools
9th
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Regression Testing Tools (10th)
 

Mindshare comparison

As of May 2025, in the Load Testing Tools category, the mindshare of BlazeMeter is 12.9%, down from 15.7% compared to the previous year. The mindshare of k6 Open Source is 3.9%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools
 

Featured Reviews

Bala Maddu - PeerSpot reviewer
Reduced our test operating costs, provides quick feedback, and helps us understand how to build better test cases
Overall, it's helped our ability to address test data challenges. The test data features on their own are very good, but version control test data isn't included yet. I think that's an area for improvement. We can update the test data on the cloud. That's a good feature. There's also test data management, which is good. [Runscope] doesn't have the test data management yet. Mock services do, and performance testing has it. We can do the same test through JMeter, validating the same criteria, but the feedback from [Runscope] is quite visible. We can see the request and the response, what data comes back, and add the validation criteria. We can manage the test environments and test data, but running the same API request for multiple test data is missing. We cloned the test cases multiple times to run it. They need to work on that. Version controlling of the test cases and the information, the ability to compare the current version and the previous version within [Runscope] would be really nice. The history shows who made the changes, but it doesn't compare the changes. In the future, I would like to see integrations with GitLab and external Git reports so we could have some sort of version control outside as well. There is no current mechanism for that. The ability to have direct imports of spoken API specifications instead of converting them to JSON would be nice. There are some features they could work on.
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.

Quotes from Members

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

Pros

"The product's most valuable features include its cloud-based nature, which allows us to conduct tests without relying on local resources."
"It has a unique programming dashboard that is very user-friendly."
"The solution’s most valuable feature is the dashboard."
"I really like the recording because when I use the JMeter the scripting a lot of recording it takes me a lot of time to get used to. The BlazeMeter the recording is quick."
"In our company, various teams use BlazeMeter, particularly appreciating its cloud license software, which supports up to 5,000 users. BlazeMeter's cloud capabilities allow us to load test or simulate traffic from any location worldwide, such as Europe, North America, South America, Australia, and even specific cities like Delhi. So, with one cloud license, we can simulate user load from various locations globally."
"The most valuable aspect of BlazeMeter is its user-friendly nature, ability to conduct distributed load testing and comprehensive analysis and reporting features. It particularly excels in providing a clear and organized view of load test results."
"Running from the cloud with load distribution, exhibiting load from different geo-regions. Generating the load from different cloud regions is the best feature."
"It has helped us simulate heavy load situations so we can fix performance issues ahead of time."
"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

"I don't think I can generate a JMX file unless I run JMeter, which is one of my concerns when it comes to BlazeMeter."
"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."
"I believe that data management and test server virtualization are things that Perforce is working on, or should be working on."
"The product currently doesn't allow users to run parallel thread groups, making it an area that should be considered for improvement."
"For a new user of BlazeMeter, it might be difficult to understand it from a programming perspective."
"We encountered some minor bugs, and I would like to have the ability to add load generators to workspaces without having to use APIs. We can't do that now, so we're beholden to the APIs."
"If the solution had better support and the documentation was efficient it would do better in the market."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"The solution is free and open source."
"The overall product is less costly than our past solutions, so we've absolutely saved money."
"It is an averagely priced product."
"We pay a yearly licensing fee for the solution."
"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."
"I rate the product's price two on a scale of one to ten, where one is very cheap, and ten is very expensive. The solution is not expensive."
"The product isn't cheap, but it isn't the most expensive on the market. During our proof of concept, we discovered that you get what you pay for; we found a cheaper solution we tested to be full of bugs. Therefore, we are willing to pay the higher price tag for the quality BlazeMeter offers."
"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
22%
Computer Software Company
16%
Manufacturing Company
8%
Retailer
7%
Computer Software Company
21%
Financial Services Firm
11%
Manufacturing Company
10%
Media Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
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.
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.
 

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: April 2025.
851,604 professionals have used our research since 2012.