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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

"BlazeMeter has allowed us to simplify and speed up our load testing process."
"One thing that we are doing a lot with the solution, and it's very good, is orchestrating a lot of JMeter agents. This feature has helped us a lot because we can reuse other vendors' performance scripts that they have used with JMeter before."
"For me, the best part is that we can graphically see the test result at runtime. It helps us understand the behavior of the application during all stages of the test."
"The product's initial setup phase was simple."
"The on-the-fly test data improved our testing productivity a lot. The new test data features changed how we test the applications because there are different things we can do. We can use mock data or real data. We can also build data based on different formats."
"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 supports any number of features and has a lot of tutorials."
"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

"The tool fails to offer better parameterization to allow it to run the same script across different environments, making it a feature that needs a little improvement."
"Lacks an option to include additional users during a test run."
"A possible improvement could be the integration with APM tools."
"In terms of improvement, I would like to have the ability to customize reports."
"From a performance perspective, BlazeMeter needs to be improved...BlazeMeter has not found the extensions for WebSockets or Java Applet."
"Having more options for customization would be helpful."
"If the solution had better support and the documentation was efficient it would do better in the market."
"The only downside of BlazeMeter is that it is a bit expensive."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"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."
"My company has opted for a pay-as-you-go model, so we don't make use of the free version of the product."
"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"When compared with the cost of the licenses of other tools, BlazeMeter's license price is good."
"The licensing fees are billed on a monthly basis and they cost approximately $100 for the basic plan."
"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 product pricing is reasonable."
"I would rate the pricing a three out of ten, where one is very cheap, and ten is very expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
Computer Software Company
12%
Retailer
8%
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?
Regarding pricing, it is favorable compared to other tools, providing good value. The licensing is flexible, with options for one or two-year terms based on user requirements, and BlazeMeter occasi...
 

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 2026.
882,744 professionals have used our research since 2012.