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APIs · head to head

Gravitee vs Kustomize

Gravitee logo

Gravitee

APIs

Open source API management platform for event-native APIs

From
Free
Rated
-
Full reviewWebsite
Kustomize logo

Kustomize

Cloud

Template-free customisation of Kubernetes YAML

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Gravitee the entry paid API management tier is $2,500 a month and includes a single production gateway; Kustomize no packaging or distribution story, which is exactly what Helm charts provide
  • They diverge on capability: Gravitee covers API Gateway, Kustomize covers Overlay patching.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Gravitee and Kustomize actually diverge.

Attributes where Gravitee and Kustomize differ
AttributeGraviteeKustomize
Pricing modelfreemiumOpen source, no licence fee
PlatformsCloud, On-premise, KubernetesKubernetes, Linux, macOS, Windows
CategoryAPIsCloud
Founded2015Unknown

Identical on both: starting price (Free), free tier (Yes), 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 Gravitee

  • API Gateway
  • Developer Portal
  • Analytics Dashboard
  • Kubernetes
  • Docker
  • Kafka
  • LDAP
  • Cloud support

Only in Kustomize

  • Overlay patching
  • No templating language
  • Built into kubectl
  • Generators

What people use each for

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

Gravitee

  • API gateway and lifecycle managementnot Kustomize
  • Exposing Kafka event streams as managed APIsnot Kustomize
  • Protocol mediation between event brokers and clientsnot Kustomize
  • Self-hosting an open source API gatewaynot Kustomize
  • Access control and authentication in front of internal APIsnot Kustomize

Kustomize

  • Managing dev, staging and production variants of the same manifestsnot Gravitee
  • Keeping manifests readable and directly applyable rather than templatednot Gravitee
  • Patching third-party manifests without forking themnot Gravitee

Where each one falls short

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

Gravitee

  • The entry paid API management tier is $2,500 a month and includes a single production gateway
  • Event management is priced separately, starting at $1,250 a month for the Comet tier
  • Tiers are gated on gateway and broker counts, so scaling horizontally means moving tier rather than paying incrementally
  • Data logging masking and other enterprise features are withheld from the lowest paid tier
  • 24/7 support requires the top Universe tier

Kustomize

  • No packaging or distribution story, which is exactly what Helm charts provide
  • Deeply nested overlays become hard to follow, and reasoning about the final output requires building it
  • No release lifecycle: nothing tracks what is installed or supports rollback the way Helm does
  • Patch syntax is fiddly for anything beyond simple field replacement

Pricing, plan by plan

Gravitee

Free
  • CommunityFree
    • API Gateway
    • Basic analytics
    • Community support
  • Enterprise$1500/monthly
    • Advanced features
    • SLA support
    • SSO integration
  • Custom$undefined/monthly
    • Custom deployment
    • Dedicated support
    • Premium SLA

Kustomize

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

Which should you pick?

Choose Gravitee if

  • You need api gateway.
  • You want to start without paying.
  • You work on Cloud, On-premise, Kubernetes.
  • You also want developer portal.
Gravitee review

Choose Kustomize if

  • You need overlay patching.
  • You want to start without paying.
  • You work on Kubernetes, Linux, macOS, Windows.
  • You also want no templating language.
Kustomize review

Questions people ask

Is Gravitee or Kustomize better?
Neither clearly leads. Gravitee starts at Free and Kustomize at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Gravitee or Kustomize?
Gravitee starts at Free and Kustomize at Free.
Does Gravitee or Kustomize run on more platforms?
Gravitee runs on Cloud, On-premise, Kubernetes. Kustomize runs on Kubernetes, Linux, macOS, Windows.
Can I use Gravitee for free?
Both have a free tier, so you can try either at no cost before committing.
What is Gravitee best used for?
Gravitee is most often used for api gateway and lifecycle management, exposing kafka event streams as managed apis, protocol mediation between event brokers and clients, self-hosting an open source api gateway. Of those, api gateway and lifecycle management and exposing kafka event streams as managed apis are not what Kustomize is typically brought in for.
What can Gravitee do that Kustomize cannot?
Gravitee covers API Gateway, Developer Portal, Analytics Dashboard, Kubernetes. Kustomize covers Overlay patching, No templating language, Built into kubectl, Generators.

Answered from the vendors’ own pages

Gravitee: What is Gravitee's pricing model?

Gravitee uses a tiered subscription model with monthly flat pricing. The Planet tier for API Management starts at $2,500/month with one production gateway, while the Comet tier for Event Management starts at $1,250/month.

Source
Kustomize: Is Kustomize free?

Yes, open source and part of the Kubernetes project.

Gravitee: Are there hidden fees with Gravitee?

No. Gravitee explicitly states there are no hidden fees, and all tiers include unlimited users and unlimited APIs under management.

Source
Kustomize: Kustomize or Helm?

Kustomize patches plain YAML and keeps bases readable; Helm templates and packages applications with a release lifecycle. Many teams use both — Helm to install third-party charts, Kustomize to patch them.

Gravitee: What does higher tier pricing include in Gravitee?

Higher tiers add more production gateways, enterprise plugins, and enhanced support levels ranging from Gold to Platinum/Diamond support.

Source
Kustomize: Do I need to install Kustomize?

No. It is built into kubectl, available through kubectl apply -k.

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