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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 (3rd), Functional Testing Tools (9th), API Testing Tools (8th), Test Automation Tools (6th)
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 January 2026, in the Load Testing Tools category, the mindshare of BlazeMeter is 8.2%, down from 15.3% compared to the previous year. The mindshare of k6 Open Source is 4.5%, up from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools Market Share Distribution
ProductMarket Share (%)
BlazeMeter8.2%
k6 Open Source4.5%
Other87.3%
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."
"The solution’s most valuable feature is the dashboard."
"The orchestration feature is the most valuable. It's like the tourist backend component of BlazeMeter. It allows me to essentially give BlazeMeter multiple JMeter scripts and a YAML file, and it will orchestrate and execute that load test and all those scripts as I define them."
"BlazeMeter can be used for both API and performance testing, it is a multi-facility tool."
"The product's initial setup phase was simple."
"It is a stable solution. When we compare BlazeMeter with other tools in the market, I can say that the solution's overall performance has also been very good in our company."
"The stability is good."
"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."
 

Cons

"In terms of improvement, I would like to have the ability to customize reports."
"BlazeMeter should improve or make available some features out of the box that JMeter requires customization for."
"Having more options for customization would be helpful."
"The scalability features still need improvement."
"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 should be some visibility into load testing. I'd like to capture items via snapshots."
"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."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"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."
"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 product pricing is reasonable."
"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"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."
"I would rate the pricing a three out of ten, where one is very cheap, and ten is very expensive."
"The solution is free and open source."
"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."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
17%
Computer Software Company
12%
Retailer
8%
Manufacturing Company
7%
Computer Software Company
15%
Financial Services Firm
10%
Media Company
7%
Retailer
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.
881,036 professionals have used our research since 2012.