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Developer Tools · head to head

Buildkite vs Caddy

Buildkite logo

Buildkite

Developer Tools

CI/CD pipelines that run on your own compute

From
Free
Free plan
Yes
Full reviewWebsite
Caddy logo

Caddy

Cloud

Web server with automatic HTTPS by default

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Buildkite free plan caps at 5 users and 10 concurrent jobs, with 2,000 Linux vCPU minutes per month and 30 day build retention; Caddy smaller ecosystem than Nginx, so third-party guides and modules are fewer
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Buildkite and Caddy actually diverge.

Attributes where Buildkite and Caddy differ
AttributeBuildkiteCaddy
Pricing modelsubscriptionOpen source, no licence fee
PlatformsWebLinux, macOS, Windows, Docker
CategoryDeveloper ToolsCloud

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 Buildkite

Nothing recorded that Caddy does not also cover.

Only in Caddy

  • Automatic HTTPS
  • Caddyfile
  • Reverse proxy
  • Single binary

What people use each for

The jobs each tool is most often brought in to do.

Buildkite

  • CI/CD pipeline automationnot Caddy
  • Test execution at scalenot Caddy
  • Deployment automationnot Caddy

Caddy

  • Sites and services where expired certificates have caused outages beforenot Buildkite
  • Small deployments where Nginx configuration is more effort than the problem warrantsnot Buildkite
  • Reverse proxying internal services with TLS without a certificate workflownot Buildkite

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Buildkite

  • Free plan caps at 5 users and 10 concurrent jobs, with 2,000 Linux vCPU minutes per month and 30 day build retention
  • Pro plan is $30 per active user per month, capped at 50 users, with only 10 of the up to 250 concurrent agents included before extra usage
  • Enterprise plan enforces a 30 user minimum even though pricing itself is custom
  • Hosted compute beyond included minutes is metered at $0.004 per vCPU minute on Linux and $0.02 per vCPU minute on Mac

Caddy

  • Smaller ecosystem than Nginx, so third-party guides and modules are fewer
  • Adding plugins means rebuilding the binary rather than loading a module
  • Under very high throughput Nginx generally still benchmarks ahead
  • Automatic certificate issuance needs outbound internet access, which complicates air-gapped deployments

Pricing, plan by plan

Buildkite

Free
  • FreeFree
    • Up to 5 users
    • 10 concurrent jobs
    • 2000 Linux vCPU minutes monthly
  • Pro$30/month
    • Up to 50 users
    • 250 concurrent agents (10 included)
    • 4000 Linux vCPU minutes monthly
  • Enterprise$null/custom
    • Unlimited users (30 minimum)
    • Custom usage limits
    • Full platform access

Caddy

Free
  • CaddyFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Buildkite if

  • You want to start without paying.
Buildkite review

Choose Caddy if

  • You need automatic https.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker.
  • You also want caddyfile.
Caddy review

Questions people ask

Is Buildkite or Caddy better?
Neither clearly leads. Buildkite starts at Free and Caddy at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Buildkite or Caddy?
Buildkite starts at Free and Caddy at Free.
Does Buildkite or Caddy run on more platforms?
Buildkite runs on Web. Caddy runs on Linux, macOS, Windows, Docker.
Can I use Buildkite for free?
Both have a free tier, so you can try either at no cost before committing.
What is Buildkite best used for?
Buildkite is most often used for ci/cd pipeline automation, test execution at scale, deployment automation. Of those, ci/cd pipeline automation and test execution at scale are not what Caddy is typically brought in for.
What can Buildkite do that Caddy cannot?
Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary.

Answered from the vendors’ own pages

Buildkite: Can I use Buildkite without paying?

Yes, Buildkite offers a free plan that includes up to 5 users, 10 concurrent jobs, 2000 Linux vCPU minutes monthly, and 250k test executions per month at no cost.

Source
Caddy: Is Caddy free?

Yes, open source under the Apache 2.0 licence, free for commercial use.

Buildkite: What happens if I exceed my included compute minutes on Buildkite?

Hosted agent compute is charged separately at $0.004 per Linux vCPU minute and $0.02 per Mac vCPU minute, billed to the second with no minimums.

Source
Caddy: What does automatic HTTPS mean?

Caddy obtains certificates from Let’s Encrypt or ZeroSSL on first request and renews them before expiry, with no cron job or configuration.

Buildkite: Do I need an annual commitment for Buildkite's Pro plan?

No, Buildkite's Pro plan is billed monthly at $30 per active user with no long-term contract required. All tiers include a 30-day all-access trial.

Source
Caddy: Caddy or Nginx?

Caddy is dramatically simpler to configure and removes certificate management. Nginx has the larger ecosystem and better peak throughput.

Buildkite: What user limits apply to each Buildkite plan?

Free plan supports up to 5 users, Pro plan supports up to 50 users, and Enterprise plan provides unlimited users with a 30-user minimum.

Source
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