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Developer Tools · head to head

GNAT Pro vs Ory

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
Ory logo

Ory

Cybersecurity

Open-source identity, authentication, and permissions infrastructure

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Ory 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; Ory production and Growth plans are billed annually ($770/year and $9,350/year), which is a larger upfront commitment than monthly-only competitors.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where GNAT Pro and Ory differ
AttributeGNAT ProOry
Starting priceOn requestFree
Pricing modelquoteusage-based
Free tierNoYes
PlatformsWebweb, api
CategoryDeveloper ToolsCybersecurity

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 Ory does not also cover.

Only in Ory

  • Authentication APIs
  • Permissions engine
  • Machine-to-machine tokens
  • B2B organizations
  • SAML SSO
  • Multi-region deployments

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

Ory

  • Adding self-hosted or cloud identity to a new productnot GNAT Pro
  • Implementing fine-grained permission checksnot GNAT Pro
  • Supporting B2B organizations and multi-tenancynot GNAT Pro
  • Building machine-to-machine authentication for microservicesnot 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

Ory

  • Production and Growth plans are billed annually ($770/year and $9,350/year), which is a larger upfront commitment than monthly-only competitors.
  • SAML SSO and multi-region deployments are reserved for the custom-priced Enterprise tier.
  • Usage-based pricing across aDAU, M2M tokens, and permission checks makes cost estimation more complex than flat per-MAU billing.

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Ory

Free
  • DeveloperFree
    • Community support
    • No production environments
  • Production$64/month
    • $21 monthly credit included
    • 1 production environment
    • 3 staging environments
  • Growth$779/month
    • $255 monthly credit included
    • 2 production environments
    • B2B organizations (max 3)

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Ory if

  • You need authentication apis.
  • You want to start without paying.
  • You work on web, api.
  • You also want permissions engine.
Ory review

Questions people ask

Is GNAT Pro or Ory better?
Neither clearly leads. GNAT Pro starts at On request and Ory at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Ory?
Ory has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Ory.
Does GNAT Pro or Ory run on more platforms?
GNAT Pro runs on Web. Ory runs on web, api.
Can I use Ory for free?
Yes. Ory 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 Ory is typically brought in for.
What can GNAT Pro do that Ory cannot?
Ory covers Authentication APIs, Permissions engine, Machine-to-machine tokens, B2B organizations.

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
Ory: What does Ory cost?

Ory has a free Developer tier, a Production plan at $770/year including a $21 monthly credit, a Growth plan at $9,350/year including a $255 monthly credit, and custom Enterprise pricing.

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
Ory: How is usage metered?

Beyond the included credit, Ory charges per average daily active user (aDAU), per machine-to-machine token, and per permission check, with lower per-unit rates on the Growth plan.

Source
Ory: What payment methods are supported?

Ory accepts credit cards (Visa, MasterCard, Amex) and bank transfer, processed via Stripe.

Source
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