BlazeMeter vs ReadyAPI Performance vs k6 Open Source comparison

Perforce and k6 are both solutions in the Load Testing Tools category. Perforce is ranked #4 with an average rating of 7.9, while k6 is ranked #7 with an average rating of 7.5. Perforce holds a 10.1% mindshare in LTT, compared to k6’s 3.9% mindshare. Additionally, 94% of Perforce users are willing to recommend the solution, compared to 100% of k6 users who would recommend it.

BlazeMeter

Read 49 BlazeMeter reviews

4,392 Views
3,733 Comparison Views

94% willing to recommend

k6 Open Source

Read 2 k6 Open Source reviews

786 Views
613 Comparison Views

100% willing to recommend

ReadyAPI Performance

Read 8 ReadyAPI Performance reviews

410 Views
320 Comparison Views

87% willing to recommend

BlazeMeter

k6 Open Source

ReadyAPI Performance

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between BlazeMeter, k6 Open Source, and ReadyAPI Performance based on real PeerSpot user reviews.

Find out what your peers are saying about Apache, Tricentis, OpenText and others in Load Testing Tools.

To learn more, read our detailed Load Testing Tools Report (Updated: August 2025).

Buyer's Guide

Load Testing Tools

August 2025

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Helped 867,676 peers since 2012

Review summaries and opinions

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

Mindshare comparison

As of September 2025, in the Load Testing Tools category, the mindshare of BlazeMeter is 10.1%, down from 16.8% compared to the previous year. The mindshare of k6 Open Source is 3.9%, up from 2.2% compared to the previous year. The mindshare of ReadyAPI Performance is 1.8%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Load Testing Tools Market Share Distribution
Product	Market Share (%)
BlazeMeter	10.1%
k6 Open Source	3.9%
ReadyAPI Performance	1.8%
Other	84.2%

Load Testing Tools

Featured Reviews

Manoj Raghavendra

Director at SMKR Consultancy LLP

Provides global load simulations without managing infrastructure and offers built-in reporting features

BlazeMeter should improve or make available some features out of the box that JMeter requires customization for. The licensing cost is also a concern since BlazeMeter is not free like JMeter, which limits its use. Additionally, if there is no host in preferred locations such as some Asian or Middle Eastern countries, it might not be convenient to use BlazeMeter.

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NalinGoonawardana

Principal Consultant ( Test automation - Performance testing) at TTC Global (TTC) at TTC at a tech services company with 51-200 employees

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.

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Mahendra Andhale

Test Manager at a computer software company with 1,001-5,000 employees

Open-source and flexible but needs client-side scripting

It's an open-source tool and supports a lot of plugins and custom code, which allows integration with other tools like Azure and AWS. Also, the APIs tested with SoapUI can be directly used, avoiding the need to create collections like in Postman. The client-side scripting, if incorporated, would provide a complete solution for performance tests. It can handle user distribution and transaction throughput distribution effectively.

Read full review

Quotes from Members

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

Pros

"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."

"BlazeMeter's most valuable feature is its cloud-based platform for performance testing."

"The solution’s most valuable feature is the dashboard."

"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."

"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."

"It supports any number of features and has a lot of tutorials."

"Its most valuable features are its strong community support, user-friendly interface, and flexible capacity options."

"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."

More BlazeMeter pros

"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."

"It's like a centralized interface that allows us to increase the quality of our APIs."

"ReadyAPI automation can help us validate the functionality of most web services, allowing us to find out the exact number of defects before deployment to the user interface."

"It's an open-source tool and supports a lot of plugins and custom code, which allows integration with other tools like Azure and AWS."

"We can scale."

"The performance and reporting of this solution have been its most valuable features."

"It stores good reports, as in, improved reports if compared with the SoapUI. It also has in-built security. You just need to switch and check the security testing. My team has never used it, but I know ReadyAPI provides those facilities as well."

"he initial deployment process is easy."

"We find the product to be scalable."

Cons

"BlazeMeter should improve or make available some features out of the box that JMeter requires customization for."

"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."

"The only downside of BlazeMeter is that it is a bit expensive."

"The support could be better."

"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 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."

"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."

"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."

More BlazeMeter cons

"One area where k6 could improve is by introducing a GUI similar to JMeter."

"I want the solution to be able to monitor Apache Kafka activity as well."

"This solution could be improved by offering artificial AI testing in addition to API testing. For example, we would like to have machine learning testing because when test applications, manual work could be completed automatically using this functionality."

"This is an area for improvement with the tool. We unnecessarily use JMeter for some website testing, which we would like to avoid by introducing this tool for API and load testing because it provides load testing features."

"The solution’s interface could be improved."

"It is very slow sometimes."

"The client-side scripting mostly isn't needed for performance testing, however, if implemented, it would enhance the tool."

"I'd not sure if they have the same level of documentation for performance and security testing."

"We need some time to understand and configure the solution."

Pricing and Cost Advice

"The solution is free and open source."

"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."

"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."

"We pay a yearly licensing fee for the solution."

"The licensing fees are billed on a monthly basis and they cost approximately $100 for the basic plan."

"The overall product is less costly than our past solutions, so we've absolutely saved money."

"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 pricing is reasonable."

More BlazeMeter pricing and cost advice

Information not available

"We find the cost to be affordable."

"This solution operates on a licence basis and the usage and cost varies according to the use case. It is more expensive if you include access to the learning center. On average it costs approximately 800 Euros."

"ReadyAPI Performance’s pricing is reasonable."

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Top Industries

By visitors reading reviews

Financial Services Firm

19%

Computer Software Company

15%

Manufacturing Company

Retailer

Computer Software Company

18%

Financial Services Firm

Manufacturing Company

Retailer

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	18
Midsize Enterprise	9
Large Enterprise	22

No data available

By reviewers
Company Size	Count
Small Business	2
Midsize Enterprise	1
Large Enterprise	5

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 perfo...

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What do you like most about BlazeMeter?

It has a unique programming dashboard that is very user-friendly.

See all answers

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 bas...

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What do you like most about k6 Open Source?

The standout feature of k6 is its strong focus on API performance testing.

See all answers

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 performanc...

See all answers

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 eas...

See all answers

What do you like most about ReadyAPI Performance?

It's like a centralized interface that allows us to increase the quality of our APIs.

See all answers

What is your experience regarding pricing and costs for ReadyAPI Performance?

Load UI is mostly free, and the pricing for the pro version is very affordable compared to other tools like LoadRunner.

See all answers

What needs improvement with ReadyAPI Performance?

The client-side scripting mostly isn't needed for performance testing, however, if implemented, it would enhance the ...

See all answers

Comparisons

Apache JMeter vs BlazeMeter

Compared 44% of the time

OpenText Core Performance Engineering (LoadRunner Cloud) vs BlazeMeter

Compared 17% of the time

Tricentis NeoLoad vs BlazeMeter

Compared 16% of the time

OpenText Professional Performance Engineering (LoadRunner Professional) vs BlazeMeter

Compared 6% of the time

Akamai CloudTest vs BlazeMeter

Compared 4% of the time

More BlazeMeter Competitors

Tricentis NeoLoad vs k6 Open Source

Compared 32% of the time

Selenium HQ vs k6 Open Source

Compared 14% of the time

Apache JMeter vs k6 Open Source

Compared 12% of the time

Oracle Application Testing Suite vs k6 Open Source

Compared 8% of the time

SmartBear LoadNinja vs k6 Open Source

Compared 8% of the time

More k6 Open Source Competitors

OpenText Professional Performance Engineering (LoadRunner Professional) vs ReadyAPI Performance

Compared 76% of the time

Apache JMeter vs ReadyAPI Performance

Compared 24% of the time

Product Reports

Buyer's Guide

BlazeMeter

September 2025

Download BlazeMeter product report

Buyer's Guide

Load Testing Tools

August 2025

Download k6 Open Source product report

Buyer's Guide

ReadyAPI Performance

August 2025

Download ReadyAPI Performance product report

Also Known As

JMeter Cloud

Load Impact

LoadUI NG Pro

Overview

BlazeMeter ensures delivery of high-performance software by enabling DevOps teams to quickly and easily run open-source-based performance tests against any mobile app, website or API at massive scale to validate performance at every stage of software delivery.

The rapidly growing BlazeMeter community has more than 100,000 developers and includes prominent global brands such as Adobe, Atlassian, Gap, NBC Universal, Pfizer and Walmart as customers. Founded in 2011, the company is headquartered in Palo Alto, Calif., with its research and development in Tel Aviv.

Perforce

Load Impact offers three main features:

Automated testing - Integrates into your CD pipeline with CI plug-ins or opt for full control with API/SDKs.
API testing - a powerful scripting environment where you can create as simple or complex API scenarios as you need.
Web & web app testing - easily load test your website or web app. Record user scenarios using our Chrome extension or proxy recorder and configure a test with just a few clicks - no programming required.

ReadyAPI Performance is an open-source load and quality assurance testing solution whose design allows organizations of all sizes to completely control their load testing process. It gives administrators the ability to customize their testing parameters and tests to best meet their needs. They can also quickly run the tests that they need to run in order to guarantee the peak performance of their application and various network components.

ReadyAPI Performance Benefits

Some of the ways that organizations can benefit by deploying ReadyAPI Performance include:

Run ReadyAPI Performance on the operating system of your choice. It is a system agnostic solution and can be deployed on any of the major operating systems that are currently on the market.

Track events in real time. ReadyAPI Performance enables users to monitor every part of their application and network in real time. This makes it possible for administrators to spot potential issues and resolve them before they can harm their application’s performance.

Test flexibility. Administrators can customize the tests that they run to best fit their particular needs. Any test that an organization needs can be designed and run by this solution without the need for integration with additional solutions.

ReadyAPI Performance Features

Some of the many useful features ReadyAPI Performance has to offer include:

Test customization tools. Users have access to a number of tools that enable them to set the parameters of and design the tests that they run to meet their application requirements. These tools make it possible for them to tweak the tests while they are running, should that prove necessary. Administrators can drag and drop the components that they want to use to create the tests.

Test report generator. ReadyAPI Performance comes with a report generator that provides users with easy to understand test insights. After the tests end, this feature produces a report that shows not only the results of the test, but also an analysis that enables administrators to understand the implications of their test results.

Robust load testing capabilities. ReadyAPI Performance’s load testing tools can handle high volumes of load testing.

Reviews from Real Users

ReadyAPI Performance is a solution that stands out when compared to many of its competitors. It can offer organizations many advantages. Two major advantages are the wealth of features that it makes available to users and the ease with which organizations can deploy it for use.

Kumar G., a software engineer at Birlasoft India Ltd., writes, “It provides many features. It facilitates load testing, operational volume testing, spike testing for the APIs, and the API is very fast It stores good reports, as in, improved reports if compared with SoapUI. It also has in-built security. You just need to switch and check the security testing.”

He also writes, “The initial setup is not very complex. For testers, they have to create their test cases and scenarios within ReadyAPI, and there they simply go for the load testing.”

SmartBear

Sample Customers

DIRECTV, GAP, MIT, NBCUniversal, Pfizer, StubHub

rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT

Mercedes-Benz, Adobe, Hilton Hotels, The Home Depot

Find out what your peers are saying about Apache, Tricentis, OpenText and others in Load Testing Tools. Updated: August 2025.

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