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Developer Tools · head to head

Buildkite vs GNAT Pro

Buildkite logo

Buildkite

Developer Tools

CI/CD pipelines that run on your own compute

From
Free
Rated
-
Full reviewWebsite
GNAT Pro logo

GNAT Pro

Developer Tools

Software development environments and toolchains for Ada, C/C++ and Rust

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Buildkite has a free tier, so it costs nothing to try first.
  • 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; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes

Where they differ

Only the attributes on which Buildkite and GNAT Pro actually diverge.

Attributes where Buildkite and GNAT Pro differ
AttributeBuildkiteGNAT Pro
Starting priceFreeOn request
Pricing modelsubscriptionquote
Free tierYesNo

Identical on both: platforms (Web), user rating (Not yet rated), category (Developer Tools).

What people use each for

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

Buildkite

  • CI/CD pipeline automationnot GNAT Pro
  • Test execution at scalenot GNAT Pro
  • Deployment automationnot GNAT Pro

GNAT Pro

  • Building certified avionics software meeting DO-178B/C standardsnot Buildkite
  • Developing automotive embedded systems with ISO-26262 compliancenot Buildkite
  • Integrating Ada, C/C++, and Rust components in single codebasenot Buildkite
  • Managing software supply chain vulnerabilities and SBOMsnot Buildkite
  • Supporting long-lived software systems spanning decadesnot 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

GNAT Pro

  • No pricing published on website; requires contacting AdaCore directly for quotes
  • Vendor indicates per-user, per-year subscription model but does not disclose specific costs

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

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Which should you pick?

Choose Buildkite if

  • You want to start without paying.
Buildkite review

Choose GNAT Pro if

Nothing in the data separates GNAT Pro from Buildkite on the points above - pick on price and on how each one feels to use.

GNAT Pro review

Questions people ask

Is Buildkite or GNAT Pro better?
Neither clearly leads. Buildkite starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Buildkite or GNAT Pro?
Buildkite has a free tier; the other does not. Paid plans start at Free for Buildkite and On request for GNAT Pro.
Does Buildkite or GNAT Pro run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Buildkite for free?
Yes. Buildkite has a free tier, so you can try it without paying. GNAT Pro starts at On request.
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 GNAT Pro is typically brought in for.

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
GNAT Pro: How much does GNAT Pro cost?

GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.

Source
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
GNAT Pro: What is GNAT Pro licensing model?

GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.

Source
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
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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