--- title: k6 Reviews meta_title: 'k6 Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 31 reviews by the users' company size, role or industry to find out how k6 works for a business like yours. aggregate_rating: rating_value: 4.8 review_count: 31 scale: '5' date_modified: '2026-06-15' parent_category: name: Development url: https://www.g2.com/categories/development --- # k6 Reviews **Vendor:** k6 **Category:** [Load Testing Tools](https://www.g2.com/categories/load-testing-tools) **Average Rating:** 4.8/5.0 **Total Reviews:** 31 ## About k6 k6 is an open-source tool and cloud service that makes load testing easy for developers, operations, and QA engineers. We help software teams improve the testing process so that they consistently deliver fast and reliable applications. k6 is a Grafana Labs Company. ## k6 Reviews ### 1. Shift Left your Performance Testing **Rating:** 5.0/5.0 stars **Reviewed by:** Ioannis P. | Mid-Market (51-1000 emp.) **Reviewed Date:** May 02, 2023 **What do you like best about k6?** I enjoy the great community behind it that strive to support a state of the art technical documentation and real time support for the end users. Not to mention the easy way to get started and build an efficient solution for your engineering teams that can be integrated in your development cycle with multiple extentions and observability techniques that will empower your technical analysis and reporting. **What do you dislike about k6?** If i wanted to mention something (i am not finding much to tell...) i would say the programming language support as it only supports javascript/typescript. Teams familiar with other technologies may need a small learning curve. But it is super easy for anyone to get started amrk my words! **What problems is k6 solving and how is that benefiting you?** We managed to integrate performance and stress testing within our development teams. Monitoring for real performance defects is working as a charm for us. Our performance indeed increased more and more during our release cycles. ### 2. Awesome lightweight load testing tool that's easy to use. **Rating:** 4.5/5.0 stars **Reviewed by:** Enes K. | Quality Assurance Solution Architect, Enterprise (> 1000 emp.) **Reviewed Date:** May 08, 2023 **What do you like best about k6?** The best thing regarding k6 is that the learning curve is not steep. You can create a serious load testing solution within hours. Besides simplicity, you can generate thousands of virtual users from a single machine. k6 supports hybrid load testing out of the box. **What do you dislike about k6?** You cannot reuse your existing UI testing scripts for hybrid scenarios but create new scripts. However, the feature is still in the experimental phase, and I'm sure the support from the team will come. **What problems is k6 solving and how is that benefiting you?** We all know that load testing is not cheap. Licensing, infrastructure and stuff costs can be high. k6 solved all the problems for me ### 3. k6 breaks down the hassle to get into performance testing! **Rating:** 5.0/5.0 stars **Reviewed by:** Jaswanth M. | Software Engineer in Test , Mid-Market (51-1000 emp.) **Reviewed Date:** June 05, 2023 **What do you like best about k6?** k6 is a very light weight tool to help get started with performance, but at the same time have extensive tooling to scale towards complicated scenarios. **What do you dislike about k6?** k6's architecture doesn't allow you to easily use node libraries directly (although you can still use them). That's the biggest downside when you first get started, but once you get a hang of it, it is so much effective. **What problems is k6 solving and how is that benefiting you?** * Performance testing on both API level and UI level. * Extensively use it for Kafka * Indirecly use it for test data generation * Smoke testing for performance when a new architecture is laid out. ### 4. Revolutionizing Performance Testing with K6: A Comprehensive Review **Rating:** 4.5/5.0 stars **Reviewed by:** Siddhant W. | SDET Manager, Computer Software, Enterprise (> 1000 emp.) **Reviewed Date:** February 02, 2023 **What do you like best about k6?** I recently started using the K6 performance testing tool for my software development projects, and I must say, I am thoroughly impressed. K6 is straightforward, with a simple and intuitive interface that makes setting test cases a breeze. One of the things I like best about K6 is the flexibility it provides when it comes to defining performance test scenarios. You can create complex performance test scenarios with multiple requests, query parameters, and headers, making it possible to test even the most complex applications. Another aspect of K6 that I appreciate is the detailed reporting. The tool provides a comprehensive report of the performance test results, including charts, graphs, and complex test statistics. This makes it easy to identify bottlenecks and areas for improvement in the application. The fact that K6 is open-source and free to use is also a big plus. It saves me a significant amount of money compared to other performance testing tools that often come with hefty licensing fees. Overall, I would highly recommend the K6 performance testing tool to anyone looking for an easy-to-use and flexible solution for testing the performance of their applications. Its advanced features and detailed reporting make it an excellent tool for ensuring that your applications are running at their best. **What do you dislike about k6?** First and foremost, I found the interface extremely clunky and challenging to navigate. I struggled to find the needed features, and even when I did, I often had trouble figuring out how to use them. This made the entire testing process much more time-consuming and frustrating than it needed to be. Another issue I had with K6 was the lack of customization options. I needed to test specific scenarios, but the tool didn't allow me to do so. I was stuck with a one-size-fits-all approach that didn't meet my needs. **What problems is k6 solving and how is that benefiting you?** I have been using the K6 performance testing tool for quite some time now, and I have to say, I am thoroughly impressed with its capabilities. K6 is a powerful, open-source tool that has solved several problems I faced while performing performance testing. The first problem that K6 solves is the need for a more comprehensive and flexible testing environment. K6 allows me to test the performance of my applications more accurately and realistically by emulating the behavior of real users. It supports various load tests, including API testing, URL testing, and load testing, giving me complete control over my testing environment. Another problem that K6 solves is the need for real-time results. K6 provides real-time results and performance metrics that help me identify bottlenecks and make the necessary improvements. The tool also integrates seamlessly with popular reporting tools like Grafana and InfluxDB, making it easy for me to share my results with my team. K6 has also helped me save time and money. It is an open-source tool, and I don't have to worry about licensing costs, making it a more affordable option for my team. Furthermore, K6's simple and intuitive interface has reduced the time it takes me to perform tests, freeing up more time to focus on other essential tasks. ### 5. K6 is a must for SRE **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer & Network Security | Mid-Market (51-1000 emp.) **Reviewed Date:** May 23, 2023 **What do you like best about k6?** K6 is great for getting actual data on how your application is performing and can tell you exactly what your metrics and baselines should be. This is vital to any sort of SRE based organization. **What do you dislike about k6?** You do have to know how to use javascript in order to use k6, which makes it much more flexible and is incredibly easy to use. If you do want something that only works in UI, this might not be the tool for you. **What problems is k6 solving and how is that benefiting you?** K6 allows me to figure out performance metrics, if my service is up, and allows me to get the actual response times and metrics for different requests to my service. This is incredibly useful to determine how to scale, measure, and what to measure for. ### 6. Incredibly Flexible and Dev Friendly Load Test Tool **Rating:** 5.0/5.0 stars **Reviewed by:** Almudena V. | Principal Performance Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** May 02, 2023 **What do you like best about k6?** Flexibility, Code Friendly and Scalability. Really easy to use compared to other tools we have in our stack like Azure Load Testing or Jmeter. **What do you dislike about k6?** Some azure integrations are lacking and should be improved. **What problems is k6 solving and how is that benefiting you?** Sharing code between different products. We have over 100 products in our stack and k6 solved how we can share the code between them instead of having 100 Jmx on Jmeter. ### 7. A modern Performance testing tools designed to work with Observability solutions **Rating:** 4.5/5.0 stars **Reviewed by:** Henrik R. | Cloud Native Technology, Enterprise (> 1000 emp.) **Reviewed Date:** September 02, 2022 **What do you like best about k6?** K6 provides all the components that we need to build relevant tests: - recorder to easily build k6 scripts - an efficient scripting library helping us to make our script robust and even create custom metrics out of our scripts. The biggest advantage of K6 is the large number of output plugins...I can run tests, and send the testing data to Prometheus, InfluxDB, Dynatrace ...And more. I'm a big fan of one of their extension: x6-distributed traces. it's so powerful to have an OpenTelemtry trace for each of the virtual users. **What do you dislike about k6?** I have not been able to test their browser-based testing tool. i would like to see the value and the challenge of building such tests. The only thing that I was a bit disappointed is the fact that disttributed load tests are only available with the K6 cloud...in fact not really it's possible if using the K6 operator. **What problems is k6 solving and how is that benefiting you?** We don't need today to have a performance testing platform collecting observability & load testing data. k6 is exactly designed in a smart way: generate load. For the rest, we can rely on an amazing analytics platform to analyze our tests. The other advantage is that it's a performance testing designed to enable Early performance engineering tasks ( by testing directly in dev). ### 8. Great & efficient tool for stress/load testing **Rating:** 5.0/5.0 stars **Reviewed by:** Ben R. | Software Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** February 05, 2023 **What do you like best about k6?** very efficient - can run alot of VUs on a machine easily scalable - distributed k8s testing ability to define stages & scenarios ability to define custom metrics and checks ease of use community support **What do you dislike about k6?** Browser extension is still not quite there yet **What problems is k6 solving and how is that benefiting you?** Load testing different environments at scale, using really heavy loads, finding gaps and optimizing our app for the future ### 9. Excellent tool for Cloud testing **Rating:** 5.0/5.0 stars **Reviewed by:** arturo s. | Consultant, Enterprise (> 1000 emp.) **Reviewed Date:** November 29, 2022 **What do you like best about k6?** I like the easy to set up approach. The developer friendly approach of the solution. Lots of documentation and support. Shift left approach and align with devops. **What do you dislike about k6?** It can be daunting for some testers with no developer experience. It can become a coding nightmare if not careful with best development practices. You can get lost if you are not documenting. **What problems is k6 solving and how is that benefiting you?** I can deploy performance testing validation within my organization quickly. Since it is not expensive compared to other tools, it can be easier to go through the procurement process within my organization. ### 10. Developer-Friendly Performance Testing Tool & Infrastructure **Rating:** 5.0/5.0 stars **Reviewed by:** Lindsay H. | Software Test Engineer II, Mid-Market (51-1000 emp.) **Reviewed Date:** August 01, 2022 **What do you like best about k6?** -Excellent documentation and supportive blogs (and video content like the Office Hours series) content simplifies getting started with k6 -Developer-friendly -- Easy to install and get going in the CLI. Makes performance testing more accessible to not just a few, but all of those on an engineering team. This is so important as performance testing is no longer just an expectation of a single niche quality team because of limitations of licensing or knowledge of an antiquated tool. -k6 cloud -- So far, ensuring the ability to scale our tests beyond the resource of our machines has been reassuring. The analyses and comparison features between test executions is helpful so far. Looking forward to the continued work against this infrastructure platform. **What do you dislike about k6?** -The user experience of using k6 with npm modules is not consistent with what you expect from typical development -xk6 extensions conceptually are great as a community is helping to build out a need. Just be cautious of utilization as they may not be supported long-term, though these extensions are featured in k6 documentation. **What problems is k6 solving and how is that benefiting you?** k6 has made performance testing an accessible practice for engineering teams. It's a rather low barrier to entry (getting started with k6) , yet you can get as advanced as you with, customizing your scripts as you need to get the insights required. Because of this tool, I'm seeing engineering teams starting to take on the responsibility of knowing and testing the limitations of their APIs and tiers. ### 11. K6-Game changer for API Load and Performance test **Rating:** 5.0/5.0 stars **Reviewed by:** Talgatbek K. | Software QA Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** July 26, 2022 **What do you like best about k6?** It is developer friendly and easy to write load tests and has excellent documentation. Most importantly it is a straightforward K6 report that can tell where the performance issues are. We did a thorough analysis where we compared several tools/frameworks and we can tell with full confidence that K6 is much superior compared to other tools. These are some of the benefits: It is easy to install and start writing the first L&P test, code review It is great community support and excellent documentation Excellent Report and Integrates with NewRelic, CloudWatch if we decide to retire later it is easy to do because we can still run locally without being locked to one tool. I would call the K6 a modern L&P framework that can beneficial for any company. **What do you dislike about k6?** I wish it had better support for HTTP protocols. It is awesome with API test but not so great with UI load test. **What problems is k6 solving and how is that benefiting you?** Ensuring that API we develop performance well at Production. It is not a guessing game anymore. It is a data-driven decision. ### 12. To my opinion the best performance test tool, framework & ecosystem for developers **Rating:** 5.0/5.0 stars **Reviewed by:** Jose Luis L. | Developer Community Lead & Software Architect, Enterprise (> 1000 emp.) **Reviewed Date:** December 17, 2021 **What do you like best about k6?** It's ease of use, readability and its fantastic set of constantly evolving features, paired with a vibrant community - which together with its good performance makes, to me, the best option for performance testing. And its extensibility as well... Tests are code, as they should. And readable code! **What do you dislike about k6?** There is an extensibility /plug-in system but some integrations are still not covered… đŸ˜… To complain about something, its only issue is that apart from the excellent readability of the tests, they still need to be written, so you need to know what you are doing- thank god- I still have a job. But give it time… (summary: tests needs to be written, haha) And the fact that you have to write in JavaScript - it would be fantastic to write in your own language such as C# as in my case :) **Recommendations to others considering k6:** Check other options, make your own decisions. My criteria might not match yours. My decision points were the performance vs. features, mainly its code readability, how easy it is to define a real test, its open model, and extensibility. **What problems is k6 solving and how is that benefiting you?** excellent, readable performance tests that evolve with the application, as code. One test source code fits all, so its simplicity is key. ### 13. Incredible tool to automate performance testing of APIs **Rating:** 5.0/5.0 stars **Reviewed by:** VĂ­ctor D. | Senior Quality Assurance Test Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** February 11, 2022 **What do you like best about k6?** I love that you can program instead of using an application at the user level - You can use both JS and TS - A multitude of thresholds to check the performance of our API - It can be integrated with Azure pipeline which automates the CI process much more - It has spectacular and very fast technical support - Almost perfect documentation - Easy installation **What do you dislike about k6?** - More examples in the documentation - More examples with Azure Pipeline **What problems is k6 solving and how is that benefiting you?** - Verify the performance of the APIs of our product - Have a pipeline of the API for the CI of our products - The testing of our company has taken a step forward in quality ### 14. Why is k6? **Rating:** 5.0/5.0 stars **Reviewed by:** Yusuf T. | Senior Software Quality Assurance Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** August 11, 2021 **What do you like best about k6?** You can load tests, stress tests, etc. you can. Having a JS-based structure makes it very easy to write your tests. You can find all the integrations with very good documentation from the documentation and try them immediately. If you want to see more advantages and a small example, you can review my article. - https://medium.com/nerd-for-tech/building-more-stable-banking-as-a-service-with-k6-57ba952eab02 - It supports almost any tool for real-time monitoring (Grafana, Newrelic, etc.). Since it is under the roof of Grafana, you are integrated into a very good monitoring system. Identify your company's needs and integrate instantly. It's that simple, you don't need to deal with extra requirements like other tools. **What do you dislike about k6?** An improvement can be made so that we can export the metrics we want. handleToSummary does not fully meet the expectation. **What problems is k6 solving and how is that benefiting you?** As a fintech company, transactions need to be processed simultaneously and without errors. Thanks to k6, we are solving how and in which situations we can scale our environments. With k6, we can decide how our systems will be more stable. One of the biggest problems of fintech companies is that they have problems with transactions, sometimes the systems can crash and you cannot provide service for a certain period of time, this is the last thing for a fintech company. Thanks to k6, we added the discipline of Chaos Engineering to our company. ### 15. Easy to get started and less memory footprint **Rating:** 5.0/5.0 stars **Reviewed by:** NaveenKumar N. | Performance Engineer, Small-Business (50 or fewer emp.) **Reviewed Date:** August 11, 2021 **What do you like best about k6?** k6 OSS is a free and open-source solution for the modern development environment to get started with the load testing without leaving the IDE. You can write scripts in JS, and the execution engine in Go uses less memory footprint compared to other solutions in the industry. k6 documentation and the vibrant community helps to get started with k6 quickly. Numerous examples covering various scenarios are already present in the help. Using a little bit of knowledge on JS is sufficient to get started with k6 scripting. If you are coming from pure QA background, then learning k6 might be overwhelming, but the documentation is a one-stop-shop. **What do you dislike about k6?** Wish k6 OSS has a feature to scale the load using multiple load generators. Apart from built-in protocols, it is possible to extend the functionality using the k6 extensions. But the knowledge of the Go and k6 ecosystem is required. I am expecting more built-in protocols from k6 team. **Recommendations to others considering k6:** If you want to get started with performance engineering practice, then k6 is an ideal solution to begin. k6 gels with CI/CD platform and integrates with monitoring solution and it can easily be scaled using k6 cloud. k6 is an excellent choice for microservices performance regression suite where you can easily script, parameterize, define workload model, execute and monitor. **What problems is k6 solving and how is that benefiting you?** Validation of the application performance and the infrastructure scalability by injecting load using k6 OSS. Using k6, we could find the potential bottlenecks earlier in the development and mitigating failures in production systems. ### 16. One of the best API load testing tool **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Telecommunications | Enterprise (> 1000 emp.) **Reviewed Date:** January 04, 2022 **What do you like best about k6?** K6 lets us test the very critical phases of the application program interface lifecycle with its load and regression testing utilities. They literally have very handy docs which makes the process of setting up the initial setup so smooth. All the examples in the docs given by the team are really appreciative and to the point. **What do you dislike about k6?** In the process of regression testing, sometimes for long-quantity user engagement, the K6 request becomes a little slower. Yes, it depends on the machine of the user but a significant amount of time gets lost in order to restart the test after the lags. **What problems is k6 solving and how is that benefiting you?** In the modern web2.0 world, user interaction with the internet has been increased in a very large amount. In order to keep our systems up and running, we need to go through a proper set of test cases for our web application. The load and regression testing of APIs can be done by K6 very easily. And this is one of the major benefit that we get the exact success threshold point of our endpoint. ### 17. As a former Performance Engineer and a new SRE, k6 is my combat tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Commercial Real Estate | Mid-Market (51-1000 emp.) **Reviewed Date:** August 11, 2021 **What do you like best about k6?** K6 is a cloud-native tool focused on automation and load test; that is the reason I have been working with it in my last job as a Performance Engineer, as well as my current position as an SRE in a real estate startup. We leverage the power of Go to impact our endpoints with forcefulness, to measure the latency and reliability in our business flows, and give the dev teams the trust to ship a reliable product to market. As I said before, k6 is an essential tool in our box for executing our CI/CD. **What do you dislike about k6?** We are missing the capability of writing in files through js since there are some scenarios where we have to create .csv files from the javascript when a Body Response is received. **Recommendations to others considering k6:** k6 is the "new Jmeter" in terms of usage and popularity, but with more capabilities and will be the tool de facto, as Performance Testers as SREs **What problems is k6 solving and how is that benefiting you?** 1. We are trying to reduce the technical debt in the performance of APIs and our old monolith 2. Reduce the burning of the error-budget 3. The developers have more visibility of bad performance in their pull request before merging to prod. And now the developers can put their hands on the k6 code since the language is JS. which is excellent for easier maintenance. ### 18. The best modern performance testing tool **Rating:** 5.0/5.0 stars **Reviewed by:** Marcin B. | Head of Quality Assurance, Mid-Market (51-1000 emp.) **Reviewed Date:** December 31, 2021 **What do you like best about k6?** I think the main advantages include: - Low entry-level, - Outstanding performance, thanks to the Go-based engine, - Excellent documentation, - Constantly growing community, additionally caring about the framework development. **What do you dislike about k6?** To be honest, it's hard for me to mention anything. **What problems is k6 solving and how is that benefiting you?** My team and I primarily use k6 for two purposes: 1. Project performance analysis at the final development stage to evaluate and optimize the application before production deployment. This usually happens during the extensive non-functional testing phase. 2. Regular/Continuous monitoring of the application performance, also on the development environment, to control whether the new changes affect the performance of the implemented solution. ### 19. k6 review **Rating:** 5.0/5.0 stars **Reviewed by:** Sanyam G. | Software. engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** February 18, 2022 **What do you like best about k6?** It is really very helpful in doing performance testing of our API's. Very intuitive to understand. **What do you dislike about k6?** I find integrating web socket based for load testing really difficult through k6. It would be great if it could be improved. **What problems is k6 solving and how is that benefiting you?** The problem I am trying to solve is automating performance testing of our APIs with little to no effort in writing complex scripts. It provides valuable metric data to understand performance. ### 20. Best Performance Command Tool! **Rating:** 4.5/5.0 stars **Reviewed by:** Amr S. | Lead Quality Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** November 30, 2021 **What do you like best about k6?** K6 is a very simple yet powerful Performance Tool. You can start your performance test in minutes from the Terminal. We have used it numerous times to make sure our applications meet the standards agreed with our customers. **What do you dislike about k6?** The only downside that I see is the fact that there are no graphical user interface to interact with the tool, you have to be comfortable with using the Terminal. **What problems is k6 solving and how is that benefiting you?** K6 is used across our Quality Department to ensure that our applications meet the requirements. Also, This tool is very simple and doesn't require any high specs which was very helpful in large projects. ### 21. Easy tool to use **Rating:** 4.5/5.0 stars **Reviewed by:** Muhammed A. | Staff Software Quality Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** September 27, 2021 **What do you like best about k6?** The attractive UI and simple UX make the tool easy to use if you're unfamiliar with it—this tool considered from the cheap tools can be handled from the companies budgets. The automation features are extra. **What do you dislike about k6?** Missing important feature " Cross Browser Testing," if they added this feature, it would be excellent. **What problems is k6 solving and how is that benefiting you?** We've been working in our company in the performance testing field, and we are using Load Impact in order to test the load, stress testing scenarios. It's a straightforward tool and showing you the graphs and stats you need. ### 22. A Quick Review for k6 **Rating:** 5.0/5.0 stars **Reviewed by:** kareem e. | Software Test Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** September 29, 2021 **What do you like best about k6?** There are a lot of things that I like in this product like, it really has very good documentation and every good GUI that makes the use of this product so easy. **What do you dislike about k6?** Actually to be honest I haven't anything that makes me dislike this product **What problems is k6 solving and how is that benefiting you?** In my company, we needed to apply load testing on most of our projects, so after searching I found that this tool is suitable for us and it has a very good automatic report generation that makes us can track our results easily. ### 23. So easy to begin load testing **Rating:** 5.0/5.0 stars **Reviewed by:** sania D. | Senior Software Developer in Test, Mid-Market (51-1000 emp.) **Reviewed Date:** December 02, 2021 **What do you like best about k6?** - Ease of use - Reduced bulkiness (as compared to Jmeter) - Easy to read UI **What do you dislike about k6?** - Free tier allows just 50 users at a time (most load tests would require more than that number) **What problems is k6 solving and how is that benefiting you?** - Load tested an ecommerce app within a very tight deadline - K6 made it easy to move away from Jmeter ### 24. Ajamil k6 **Rating:** 4.5/5.0 stars **Reviewed by:** ajamil j. | Software Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** September 23, 2021 **What do you like best about k6?** We can use this tool for both functional as well load testing. this is the best feature as per my overall usage. It's builtin with CI so we can use for Devops as well. **What do you dislike about k6?** As compare to JMeter, it does not support many built-in protocols like TDP, SMTP. It provides significantly less functionality in its free version. **What problems is k6 solving and how is that benefiting you?** It's lightweight and didn't consume much memory. so used this toll for my project overall functional/load testing so result was very good. ### 25. The best open source performance test tool for a modern microservice environment **Rating:** 5.0/5.0 stars **Reviewed by:** James L. | SRE - Senior Enterprise Performance Engineer, Enterprise (> 1000 emp.) **Reviewed Date:** April 27, 2021 **What do you like best about k6?** Using k6, I can have a performance test up and running in 5 minutes, complete with load model and thresholds. There has never been a performance test tool that could do that, and I've been using them all for the past twenty years. Since the tests are written in JS, I have unlimited flexibility and can create modules or import libraries when I need them. The resource usage of the running tool is negligible, and spinning up large performance tests from my local is a non-issue. The support is ridiculously good - I have never had an issue go unsolved, and usually it is within a day. **What do you dislike about k6?** I am looking forward to seeing more functionality in the cloud product since I would like it to be able to automatically do deltas on each test step. I understand that this is already on the roadmap. Also, the cloud product is not currently passing the configured name of my test step to my APM (Datadog, in this case) which hampers my ability to visualize and store my cloud tests. **What problems is k6 solving and how is that benefiting you?** Honestly, the biggest problem leading to our adoption of k6 was that we needed complex test flows (Okta authentication, in this case) spun up very quickly and by one person, and for no license cost. K6 delivered in a way that I had never achieved with Loadrunner, JMeter, Gatling, Locust, Artillery, or any of the other tools would have been able to. And I have used them all. ### 26. I/O extensive load testing tools written in golang **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Financial Services | Mid-Market (51-1000 emp.) **Reviewed Date:** August 27, 2021 **What do you like best about k6?** 1. Support extensive APIs testing 2. We can write test cases in javascript 3. Golang routines make the application faster load tester **What do you dislike about k6?** 1. Does not have web UI 2. It Does not run in browsers 3. It does not run in node js 4. It does not have automated test creation tools 5. Does not distribute test running feature **What problems is k6 solving and how is that benefiting you?** I have microservices that 1. render pdf documents, 2. convert pdf to excel documents, 3. download documents. I was looking for a load tester who does load testing extensively; I started exploring available tools like JMeter, locust, postman, k6 etc. I tried all other load testing software; Not one does complete load testing. I found k6 and were able to achieve maximum open connections ### 27. Best performance testing tool I've used **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** August 18, 2021 **What do you like best about k6?** There is a lot to like about k6. It provides flexible functionality with reliability that we require daily, add to that excellent customer support, and you got yourself a pretty good tool for a low cost. **What do you dislike about k6?** On the earlier versions of the platform, we had some issues with load generators failing to start failing the test, but that looks like a thing of the past now as I haven't seen this happening in a while. **What problems is k6 solving and how is that benefiting you?** We use k6 to catch performance regression in our services. ### 28. Best Load testing tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** November 05, 2021 **What do you like best about k6?** Has Command Line bash commandsTool Support for different platforms. Helps to automatically generate k6 tests using JMeter , Postman , OpenAPI converters Also have support for Browser extension to generate a k6 script from a browser. **What do you dislike about k6?** Nothing, All features are very usefull and very easy to use. No much programming knowledge is required. **What problems is k6 solving and how is that benefiting you?** Load and API / Webservice testing. Ease of performing load testing ### 29. K6 is an easy-to-use, maintainable and affordable tool. **Rating:** 5.0/5.0 stars **Reviewed by:** Anisbert S. | Sr Performance Engineer **Reviewed Date:** August 10, 2021 **What do you like best about k6?** I like the speed in the definition of the scripts and the low consumption of resources compared to JMeter. **What do you dislike about k6?** The integration with Datadog does not offer information that is not quantitative and consolidated by periods of time. For example: individual metrics by endpoints tested. **What problems is k6 solving and how is that benefiting you?** Provide developers with a tool that they feel comfortable with and lower costs in test infrastructure. ### 30. Amazing load testing tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Internet | Mid-Market (51-1000 emp.) **Reviewed Date:** August 10, 2021 **What do you like best about k6?** It is easy to script different load balancing scenarios. **What do you dislike about k6?** I have found that the reporting can be limiting at times. For example, you can't always zoom in on graphs. **What problems is k6 solving and how is that benefiting you?** We are looking for a scriptable way to run load tests. We want the load generated outside of our environment. ### 31. Developer friendly load testing tool which uses Javascript to write script **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** August 25, 2021 **What do you like best about k6?** It's easy to install and setup. We can write our first script in just 5 minutes. It's developed using Go Lang and we don't have to worry about fine-tuning of the system resources. It provides multiple option and third party like grafana, amazon cloudwatch etc. to visualise reports. **What do you dislike about k6?** Execution of multiple tests one after the another is little tricky. **What problems is k6 solving and how is that benefiting you?** With K6 we are trying to optimize the speed of our application. ## k6 Discussions - [Hi guys, please teach me how to write the response body o whatever data, in a txt file, csv o .dat file as a dataset for subsequent requests. ?](https://www.g2.com/discussions/hi-guys-please-teach-me-how-to-write-the-response-body-o-whatever-data-in-a-txt-file-csv-o-dat-file-as-a-dataset-for-subsequent-requests) - 1 comment, 1 upvote - [What is k6 performance tool?](https://www.g2.com/discussions/what-is-k6-performance-tool) - 1 comment - [View k6 pricing details and edition comparison](https://www.g2.com/products/k6/reviews?section=pricing&secure%5Bexpires_at%5D=2026-06-23+13%3A19%3A15+-0500&secure%5Bsession_id%5D=205e5a36-9c8f-4314-97cd-339d92ae8b9b&secure%5Btoken%5D=951c6037bdac6e277b55e1df09718a062a88b5c684a8c7cd2c8a44c99760a08d&format=llm_user) ## k6 Features **Functionality** - Stress Testing - Extreme Cases - Test Variety **Reporting** - Reporting ## Top k6 Alternatives - [Apache JMeter](https://www.g2.com/products/apache-jmeter/reviews) - 4.3/5.0 (151 reviews) - [Gatling](https://www.g2.com/products/gatling/reviews) - 4.3/5.0 (67 reviews) - [Locust](https://www.g2.com/products/locust/reviews) - 4.3/5.0 (10 reviews)