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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
48
Ranking in other categories
Performance Testing Tools (3rd), Functional Testing Tools (8th), API Testing Tools (5th), Test Automation Tools (5th)
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 April 2025, in the Load Testing Tools category, the mindshare of BlazeMeter is 14.0%, down from 15.2% compared to the previous year. The mindshare of k6 Open Source is 3.7%, up from 1.1% 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 solution offers flexibility with its configurations."
"The baseline comparison in BlazeMeter is very easy, especially considering the different tests that users can easily compare."
"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."
"Its most valuable features are its strong community support, user-friendly interface, and flexible capacity options."
"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."
"It has helped us simulate heavy load situations so we can fix performance issues ahead of time."
"It is focused on concurrency testing, which has been especially beneficial for us. Their previous experiences had caused major setbacks."
"The user interface is 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

"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."
"BlazeMeter needs more granular access control. Currently, BlazeMeter controls everything at a workspace level, so a user can view or modify anything inside that workspace depending on their role. It would be nice if there was a more granular control where you could say, "This person can only do A, B, and C," or, "This user only has access to functional testing. This user only has access to mock services." That feature set doesn't currently exist."
"The support could be better."
"Sometimes, when we execute tests, the results calculated by BlazeMeter, specifically the response times for failed transactions, are incorrect."
"A possible improvement could be the integration with APM tools."
"I believe that data management and test server virtualization are things that Perforce is working on, or should be working on."
"My only complaint is about the technical support, where sometimes I found that they would not read into and understand the details of my question before answering it."
"The pricing is high"
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"The product pricing is reasonable."
"It is an averagely priced product."
"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 licensing fees are billed on a monthly basis and they cost approximately $100 for the basic plan."
"We pay a yearly licensing fee for the solution."
"The solution is free and open source."
"My company has opted for a pay-as-you-go model, so we don't make use of the free version of the product."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
23%
Computer Software Company
17%
Manufacturing Company
8%
Retailer
8%
Computer Software Company
20%
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 requires licensing, which means it is not free like JMeter, adding to the setup cost considerations.
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: February 2025.
845,406 professionals have used our research since 2012.