Testing · head to head
Selenium vs CircleCI
Selenium
Testing
Browser automation framework and the W3C WebDriver standard
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Selenium flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically; CircleCI the free plan covers 6,000 build minutes and 5 active users a month
Where they differ
Only the attributes on which Selenium and CircleCI actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Testing).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Selenium
- W3C WebDriver
- Many language bindings
- Selenium Grid
- Broad browser support
Only in CircleCI
Nothing recorded that Selenium does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Selenium
- Cross-browser testing where Safari and legacy browsers must be coverednot CircleCI
- Teams whose test suites are written in Java or C# rather than JavaScriptnot CircleCI
- Distributing a large suite across a grid of machinesnot CircleCI
CircleCI
- Continuous integration pipelines for application codenot Selenium
- Parallel test execution across containersnot Selenium
- Docker-based builds with layer cachingnot Selenium
- Deployment pipelines with approval gatesnot Selenium
- Self-hosted runners for private infrastructurenot Selenium
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Selenium
- Flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
- Setup involves drivers, versions and grid infrastructure that Playwright and Cypress bundle away
- Slower to run than tools that talk to browsers over a debugging protocol rather than WebDriver
CircleCI
- The free plan covers 6,000 build minutes and 5 active users a month
- Active users are billed at $15 each beyond the included five, and an active user is anyone who commits to a project
- Everything runs on credits, so compute, Docker layer caching at 200 credits a job and IP ranges at 450 credits per GB all draw from the same pool
- Network and storage overage costs 420 credits per GB
- Free credits expire monthly with no rollover, and paid credits expire after a year
- Scale is annual billing only
Pricing, plan by plan
Selenium
Free- SeleniumFree
- Full functionality
- Unlimited tests
- Community support
CircleCI
Free- FreeFree
- Up to 6,000 build minutes (small Docker resource class)
- Up to 5 active users per month
- 30,000 free credits per month
- Performance$15/month
- 30,000 credits included monthly
- 5 active users included (additional users $15/month each)
- 80x concurrency
- Scale$null/year
- Custom number of credits
- Customizable user limits
- Unlimited concurrency
Which should you pick?
Choose Selenium if
- You need w3c webdriver.
- You want to start without paying.
- You work on Linux, macOS, Windows, Web.
- You also want many language bindings.
Questions people ask
- Is Selenium or CircleCI better?
- Neither clearly leads. Selenium starts at Free and CircleCI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Selenium or CircleCI?
- Selenium starts at Free and CircleCI at Free.
- Does Selenium or CircleCI run on more platforms?
- Selenium runs on Linux, macOS, Windows, Web. CircleCI runs on Web.
- Can I use Selenium for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Selenium best used for?
- Selenium is most often used for cross-browser testing where safari and legacy browsers must be covered, teams whose test suites are written in java or c# rather than javascript, distributing a large suite across a grid of machines. Of those, cross-browser testing where safari and legacy browsers must be covered and teams whose test suites are written in java or c# rather than javascript are not what CircleCI is typically brought in for.
- What can Selenium do that CircleCI cannot?
- Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.
Answered from the vendors’ own pages
Selenium: Is Selenium free?
Yes, open source with no licence fee. Paid costs come from grid infrastructure or services like BrowserStack.
CircleCI: How much does CircleCI Performance plan cost?
CircleCI Performance plan costs $15 USD per month and includes 30,000 credits, 5 active users, 80x concurrency, 5 GB network, and 2 GB storage. Additional users beyond 5 cost $15 each per month.
SourceSelenium: Selenium or Playwright?
Playwright handles waiting automatically and is faster to set up, which removes most flakiness complaints. Selenium wins on language breadth, browser coverage including Safari, and existing suites you already have.
CircleCI: Can I purchase additional credits on CircleCI Performance plan?
Yes, additional credits are available at $15 for every 25,000 credits purchased. Paid credits roll over month to month and expire after one year; free plan credits expire monthly without rollover.
SourceSelenium: Is Selenium still relevant?
Yes. Its WebDriver protocol is a W3C standard implemented by every major browser, and very large existing suites are not rewritten cheaply.
CircleCI: What is included in the CircleCI free plan?
The free plan includes up to 6,000 build minutes per month (small Docker resource class), 5 active users, 30,000 free credits monthly, 30x concurrency, 1 GB network, 2 GB storage, and community support. No credit card required.
SourceCircleCI: What are the Scale plan limits and pricing?
CircleCI Scale plan offers custom pricing billed annually with unlimited concurrency, 50 GB network, 200 GB storage, customizable credits and users, enterprise controls, and GPU environment access. Requires contacting sales for a quote.
SourceRelated pages
Other head to heads
- Selenium vs Insomnia
- Selenium vs BrowserStack
- Selenium vs BugHerd
- Selenium vs Cypress
- Selenium vs Playwright
- Selenium vs GitHub Actions
- Selenium vs Puppeteer
- Selenium vs Vitest
- Selenium vs Zephyr Scale
- CircleCI vs Insomnia
- CircleCI vs BrowserStack
- CircleCI vs BugHerd
- CircleCI vs Cypress
- CircleCI vs Playwright
- CircleCI vs GitHub Actions
- CircleCI vs Puppeteer
- CircleCI vs Vitest
- CircleCI vs Zephyr Scale