Testing · head to head
CircleCI vs Selenium
Selenium
Testing
Browser automation framework and the W3C WebDriver standard
- From
- Free
- Rated
- -
The short version
- Each has a real cost: CircleCI the free plan covers 6,000 build minutes and 5 active users a month; Selenium flaky tests are the standing complaint: explicit waits and synchronisation are the tester’s job, where newer tools handle it automatically
Where they differ
Only the attributes on which CircleCI and Selenium 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 CircleCI
Nothing recorded that Selenium does not also cover.
Only in Selenium
- W3C WebDriver
- Many language bindings
- Selenium Grid
- Broad browser support
What people use each for
The jobs each tool is most often brought in to do.
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
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
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
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
Pricing, plan by plan
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
Selenium
Free- SeleniumFree
- Full functionality
- Unlimited tests
- Community support
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 CircleCI or Selenium better?
- Neither clearly leads. CircleCI starts at Free and Selenium at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, CircleCI or Selenium?
- CircleCI starts at Free and Selenium at Free.
- Does CircleCI or Selenium run on more platforms?
- CircleCI runs on Web. Selenium runs on Linux, macOS, Windows, Web.
- Can I use CircleCI for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is CircleCI best used for?
- CircleCI is most often used for continuous integration pipelines for application code, parallel test execution across containers, docker-based builds with layer caching, deployment pipelines with approval gates. Of those, continuous integration pipelines for application code and parallel test execution across containers are not what Selenium is typically brought in for.
- What can CircleCI do that Selenium cannot?
- Selenium covers W3C WebDriver, Many language bindings, Selenium Grid, Broad browser support.
Answered from the vendors’ own pages
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: Is Selenium free?
Yes, open source with no licence fee. Paid costs come from grid infrastructure or services like BrowserStack.
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: 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: 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.
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 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
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- CircleCI vs Puppeteer
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- Selenium vs BugHerd
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- Selenium vs GitHub Actions
- Selenium vs Puppeteer
- Selenium vs Vitest
- Selenium vs Zephyr Scale