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Flux vs RAD Studio

Flux logo

Flux

Cloud

GitOps continuous delivery for Kubernetes

From
Free
Free plan
Yes
Full reviewWebsite
RAD Studio logo

RAD Studio

Developer Tools

Cross-platform native app development with Delphi and C++Builder

From
$2000/perpetual
Free plan
No
Full reviewWebsite

The short version

  • Only Flux has a free tier, so it costs nothing to try first.
  • Each has a real cost: Flux no user interface of its own: observing what Flux is doing means CLI or a third-party dashboard; RAD Studio professional edition costs $2,000 for the perpetual license plus $599 for year one maintenance, totaling $2,599 before tax
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Flux and RAD Studio actually diverge.

Attributes where Flux and RAD Studio differ
AttributeFluxRAD Studio
Starting priceFree$2000/perpetual
Pricing modelOpen source, no licence feeone-time
Free tierYesNo
PlatformsKubernetes, LinuxWeb
CategoryCloudDeveloper Tools

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 Flux

  • Git as source of truth
  • Pull-based delivery
  • Helm and Kustomize support
  • Automated image updates

Only in RAD Studio

Nothing recorded that Flux does not also cover.

What people use each for

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

Flux

  • Removing cluster credentials from CI systemsnot RAD Studio
  • Keeping many clusters consistent with a single declared statenot RAD Studio
  • Automatically correcting configuration drift rather than discovering it laternot RAD Studio

RAD Studio

  • Building Windows desktop applications with VCL componentsnot Flux
  • Creating iOS and Android apps from shared Delphi codebasenot Flux
  • Connecting to Oracle databases through FireDAC connectivitynot Flux
  • Building REST web services that run on Linux serversnot Flux

Where each one falls short

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

Flux

  • No user interface of its own: observing what Flux is doing means CLI or a third-party dashboard
  • Debugging a stuck reconciliation is harder than reading a pipeline log, because failure is asynchronous
  • Everything must be in Git, which is awkward for secrets and needs a sealed-secrets or external-secrets approach
  • GitOps is a workflow change, not just a tool, and teams used to imperative deploys find the adjustment real

RAD Studio

  • Professional edition costs $2,000 for the perpetual license plus $599 for year one maintenance, totaling $2,599 before tax
  • Enterprise edition steps up to $3,400 license plus $1,199 maintenance, and Architect edition to $4,416 license plus $2,183 maintenance
  • The perpetual license only entitles the buyer to updates for one year; continued access to new updates and upgrades requires an annually renewable Update Subscription

Pricing, plan by plan

Flux

Free
  • FluxFree
    • Full functionality
    • No usage limits
    • Community support

RAD Studio

$2000/perpetual
  • Professional Edition$2000/perpetual
    • Perpetual License
    • First year maintenance $599
    • Total $2,599 + Tax
  • Enterprise Edition$3400/perpetual
    • Perpetual License
    • First year maintenance $1,199
    • Total $4,599 + Tax
  • Architect Edition$4416/perpetual
    • Perpetual License
    • First year maintenance $2,183
    • Total $6,599 + Tax

Which should you pick?

Choose Flux if

  • You need git as source of truth.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want pull-based delivery.
Flux review

Choose RAD Studio if

Nothing in the data separates RAD Studio from Flux on the points above - pick on price and on how each one feels to use.

RAD Studio review

Questions people ask

Is Flux or RAD Studio better?
Neither clearly leads. Flux starts at Free and RAD Studio at $2000/perpetual, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flux or RAD Studio?
Flux has a free tier; the other does not. Paid plans start at Free for Flux and $2000/perpetual for RAD Studio.
Does Flux or RAD Studio run on more platforms?
Flux runs on Kubernetes, Linux. RAD Studio runs on Web.
Can I use Flux for free?
Yes. Flux has a free tier, so you can try it without paying. RAD Studio starts at $2000/perpetual.
What is Flux best used for?
Flux is most often used for removing cluster credentials from ci systems, keeping many clusters consistent with a single declared state, automatically correcting configuration drift rather than discovering it later. Of those, removing cluster credentials from ci systems and keeping many clusters consistent with a single declared state are not what RAD Studio is typically brought in for.
What can Flux do that RAD Studio cannot?
Flux covers Git as source of truth, Pull-based delivery, Helm and Kustomize support, Automated image updates.

Answered from the vendors’ own pages

Flux: Is Flux free?

Yes, open source and CNCF-graduated.

RAD Studio: How much does RAD Studio cost?

RAD Studio uses perpetual licensing: Professional Edition $2,000 perpetual license + $599 first year maintenance ($2,599 total + tax). Enterprise Edition $3,400 license + $1,199 maintenance ($4,599 total + tax). Architect Edition $4,416 license + $2,183 maintenance ($6,599 total + tax).

Source
Flux: Flux or Argo CD?

Both implement GitOps. Argo CD ships a strong web UI and is often preferred for visibility; Flux is more modular and composes as controllers, which suits platform teams.

RAD Studio: What is the difference between RAD Studio editions?

Professional Edition ($2,599 total + tax) targets individual developers. Enterprise Edition ($4,599 total + tax) adds multi-tier app capabilities. Architect Edition ($6,599 total + tax) includes advanced database and cloud features. All three include perpetual licenses.

Source
Flux: Why is pull-based safer?

Because the cluster reaches out to Git rather than CI reaching into the cluster. No external system needs write credentials to production.

RAD Studio: Does RAD Studio offer Kai AI integration and discounts?

Yes, adding Kai AI to any edition provides discounts: 25% off Professional ($2,136 + tax), 30% off Enterprise ($3,394 + tax), and 40% off Architect ($4,109 + tax). This promotion is active through August 31, 2026.

Source
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