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Developer Tools · head to head

GNAT Pro vs Terragrunt

GNAT Pro logo

GNAT Pro

Developer Tools

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

From
On request
Free plan
No
Full reviewWebsite
Terragrunt logo

Terragrunt

Cloud

The Open Source IaC Orchestrator Platform Teams Trust

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Terragrunt has a free tier, so it costs nothing to try first.
  • Each has a real cost: GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes; Terragrunt additional complexity layer on top of Terraform
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where GNAT Pro and Terragrunt differ
AttributeGNAT ProTerragrunt
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWebAWS, Azure, GCP
CategoryDeveloper ToolsCloud

Identical on both: 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 GNAT Pro

Nothing recorded that Terragrunt does not also cover.

Only in Terragrunt

  • Infrastructure orchestration
  • Run Queue
  • DRY configuration
  • Automated hooks
  • Infrastructure catalog
  • Least-privilege access

What people use each for

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

GNAT Pro

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

Terragrunt

  • Organizing Terraform code across multiple environmentsnot GNAT Pro
  • Automating infrastructure deployment workflowsnot GNAT Pro
  • Implementing infrastructure as code templates for developer self-servicenot GNAT Pro

Where each one falls short

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

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

Terragrunt

  • Additional complexity layer on top of Terraform
  • Requires understanding of Terraform concepts
  • Paid tier pricing not clearly published

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Terragrunt

Free
  • Open SourceFree
    • Terragrunt CLI - completely free
    • Community support
  • Terragrunt Scale FreeFree
    • Free CI/CD pipeline
    • Unlimited runs and resources
    • For up to 25 infrastructure units
  • Terragrunt Scale Paid$undefined/custom
    • Volume pricing for more than 25 infrastructure units
    • Enterprise support

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Terragrunt if

  • You need infrastructure orchestration.
  • You want to start without paying.
  • You work on AWS, Azure, GCP.
  • You also want run queue.
Terragrunt review

Questions people ask

Is GNAT Pro or Terragrunt better?
Neither clearly leads. GNAT Pro starts at On request and Terragrunt at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Terragrunt?
Terragrunt has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Terragrunt.
Does GNAT Pro or Terragrunt run on more platforms?
GNAT Pro runs on Web. Terragrunt runs on AWS, Azure, GCP.
Can I use Terragrunt for free?
Yes. Terragrunt has a free tier, so you can try it without paying. GNAT Pro starts at On request.
What is GNAT Pro best used for?
GNAT Pro is most often used for building certified avionics software meeting do-178b/c standards, developing automotive embedded systems with iso-26262 compliance, integrating ada, c/c++, and rust components in single codebase, managing software supply chain vulnerabilities and sboms. Of those, building certified avionics software meeting do-178b/c standards and developing automotive embedded systems with iso-26262 compliance are not what Terragrunt is typically brought in for.
What can GNAT Pro do that Terragrunt cannot?
Terragrunt covers Infrastructure orchestration, Run Queue, DRY configuration, Automated hooks.

Answered from the vendors’ own pages

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
Terragrunt: Is Terragrunt free?

Yes, the Terragrunt CLI is completely free and open source. Terragrunt Scale offers a free tier for up to 25 infrastructure units.

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
Terragrunt: What is the difference between Terragrunt and Terraform?

Terragrunt is an orchestration layer on top of Terraform that handles state management, DRY principles, and deployment automation without replacing Terraform itself.

Source
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