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Developer Tools · head to head

GNAT Pro vs SST

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
SST logo

SST

Cloud

Build full-stack apps on your own infrastructure

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only SST 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; SST primarily optimized for AWS with Cloudflare support
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where GNAT Pro and SST differ
AttributeGNAT ProSST
Starting priceOn requestFree
Pricing modelquoteUnknown
Free tierNoYes
PlatformsWebAWS, Cloudflare, Node.js
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 SST does not also cover.

Only in SST

  • Single config file
  • Resource linking
  • Local development
  • Multi-cloud support
  • Multiple deployment stages
  • VPC tunneling

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 SST
  • Developing automotive embedded systems with ISO-26262 compliancenot SST
  • Integrating Ada, C/C++, and Rust components in single codebasenot SST
  • Managing software supply chain vulnerabilities and SBOMsnot SST
  • Supporting long-lived software systems spanning decadesnot SST

SST

  • Deploying Next.js frontends with serverless backendsnot GNAT Pro
  • Managing databases and storage alongside application codenot GNAT Pro
  • Creating staging environments for feature testingnot 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

SST

  • Primarily optimized for AWS with Cloudflare support
  • Learning curve for developers unfamiliar with infrastructure concepts
  • Limited documentation for some advanced use cases

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

SST

Free

No published plan breakdown. See the SST review.

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose SST if

  • You need single config file.
  • You want to start without paying.
  • You work on AWS, Cloudflare, Node.js.
  • You also want resource linking.
SST review

Questions people ask

Is GNAT Pro or SST better?
Neither clearly leads. GNAT Pro starts at On request and SST at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or SST?
SST has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for SST.
Does GNAT Pro or SST run on more platforms?
GNAT Pro runs on Web. SST runs on AWS, Cloudflare, Node.js.
Can I use SST for free?
Yes. SST 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 SST is typically brought in for.
What can GNAT Pro do that SST cannot?
SST covers Single config file, Resource linking, Local development, Multi-cloud support.

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
SST: Is SST free?

Yes, SST is open source and free. You only pay for cloud resources from AWS and other providers.

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
SST: What cloud providers does SST support?

SST supports over 150 providers through built-in AWS and Cloudflare components, plus Pulumi and Terraform providers.

Source
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