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Developer Tools · head to head

GNAT Pro vs Valkey

GNAT Pro logo

GNAT Pro

Developer Tools

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

From
On request
Free plan
No
Visit GNAT ProFull review
Valkey logo

Valkey

Databases

Open-source in-memory data store forked from Redis

From
Free
Free plan
Yes
Visit ValkeyFull review

The short version

  • Valkey is free; GNAT Pro prices on request.
  • Where GNAT Pro falls short: no pricing published on website; requires contacting AdaCore directly for quotes.
  • Where Valkey falls short: younger project, so its track record is short even though the codebase is not.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

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

Attributes where GNAT Pro and Valkey differ
AttributeGNAT ProValkey
Starting priceOn requestFree
Pricing modelQuoteOpen source, no licence fee; managed cloud billed separately
Free tierNoYes
PlatformsWebLinux, macOS, Self-hosted
CategoryDeveloper ToolsDatabases

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 Valkey does not also cover.

Only in Valkey

  • Redis-compatible
  • BSD licensed
  • Rich data structures
  • Replication and persistence

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

Valkey

  • Continuing on a permissively licensed in-memory store after the Redis licence changenot GNAT Pro
  • Caching and session storage where a foundation-governed project is a procurement requirementnot GNAT Pro
  • Migrating from Redis without rewriting application codenot 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

Valkey

  • Younger project, so its track record is short even though the codebase is not
  • Divergence from Redis grows over time, so compatibility is strongest near the fork point and weakens as both evolve
  • Ecosystem tooling and documentation still frequently assume Redis, leaving translation work

Pricing, plan by plan

GNAT Pro

On request

No published plan breakdown. See the GNAT Pro review.

Valkey

Free
  • ValkeyFree
    • Full functionality
    • Self-hosted
    • No usage limits

Which should you pick?

Choose GNAT Pro if

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

GNAT Pro review

Choose Valkey if

  • You need redis-compatible.
  • You want to start without paying.
  • You work on Linux, macOS, Self-hosted.
  • You also want bsd licensed.
Valkey review

Questions people ask

Is GNAT Pro or Valkey better?
Neither clearly leads. GNAT Pro starts at On request and Valkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, GNAT Pro or Valkey?
Valkey has a free tier; the other does not. Paid plans start at On request for GNAT Pro and Free for Valkey.
Does GNAT Pro or Valkey run on more platforms?
GNAT Pro runs on Web. Valkey runs on Linux, macOS, Self-hosted.
Can I use Valkey for free?
Yes. Valkey 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 Valkey is typically brought in for.
What can GNAT Pro do that Valkey cannot?
Valkey covers Redis-compatible, BSD licensed, Rich data structures, Replication and persistence.

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
Valkey: Is Valkey free?

Yes, BSD-licensed open source under the Linux Foundation.

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
Valkey: Why does Valkey exist?

Redis changed its licence away from BSD in 2024. Valkey is the community fork continuing under permissive terms, backed by AWS, Google Cloud and Oracle among others.

Valkey: Can I switch from Redis to Valkey?

At the fork point it is drop-in compatible with existing clients and data. The further both projects move from that point, the more you should verify the specific features you use.

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