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APIs · head to head

KeystoneJS vs Treblle

KeystoneJS logo

KeystoneJS

APIs

Powerful Node.js headless CMS framework and API platform

From
Free
Rated
-
Full reviewWebsite
Treblle logo

Treblle

APIs

API observability, security, and governance platform

From
$233/month
Rated
-
Full reviewWebsite

The short version

  • Only KeystoneJS has a free tier, so it costs nothing to try first.
  • Each has a real cost: KeystoneJS database support is limited to PostgreSQL, MySQL and SQLite; Treblle no free tier is offered; the entry-level Core plan starts at $233/month billed yearly.
  • They diverge on capability: KeystoneJS covers REST API, Treblle covers API discovery.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which KeystoneJS and Treblle actually diverge.

Attributes where KeystoneJS and Treblle differ
AttributeKeystoneJSTreblle
Starting priceFree$233/month
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsNode.js, Self-hostedweb, api
Founded2016Unknown

Identical on both: user rating (Not yet rated), category (APIs).

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 KeystoneJS

  • REST API
  • GraphQL API
  • Admin interface
  • Node.js
  • Next.js
  • React
  • Databases
  • Node.js support

Only in Treblle

  • API discovery
  • Runtime security
  • API governance
  • Compliance monitoring
  • API documentation and analytics
  • Agentic AI support

What people use each for

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

KeystoneJS

  • Headless CMS implementationnot Treblle
  • Content management systemsnot Treblle
  • Customizable API-driven applicationsnot Treblle

Treblle

  • Gaining full visibility into API traffic across multi-cloud environmentsnot KeystoneJS
  • Detecting shadow APIs and runtime security risksnot KeystoneJS
  • Meeting compliance audit requirements such as HIPAA or GDPRnot KeystoneJS
  • Governing API design standards through CI/CDnot KeystoneJS

Where each one falls short

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

KeystoneJS

  • Database support is limited to PostgreSQL, MySQL and SQLite
  • Keystone 5 is a separate legacy product documented on a different site and is not covered by the Keystone 6 docs
  • Upgrading requires following a dedicated Migrate to 8.0.0 guide, so major versions are not drop-in
  • Free support is a community Slack; enterprise-grade consulting and support is a separate paid engagement with Thinkmill and no published price

Treblle

  • No free tier is offered; the entry-level Core plan starts at $233/month billed yearly.
  • Growth and Enterprise pricing is custom and not published, requiring a sales conversation to budget.
  • Core plan is limited to 1 workspace and only 30 days of data retention.
  • SSO and on-prem/BYO cloud deployment are reserved for the top Enterprise tier.

Pricing, plan by plan

KeystoneJS

Free
  • Open SourceFree
    • Full KeystoneJS
    • Community support

Treblle

$233/month
  • Core$233/month
    • Billed yearly
    • 5 APIs
    • 500 requests/min
  • Growth$undefined/month
    • Custom APIs and request limits
    • 50M requests/month baseline
    • API security
  • Enterprise$undefined/month
    • Unlimited workspaces, APIs, and requests/min
    • API governance and compliance
    • SSO

Which should you pick?

Choose KeystoneJS if

  • You need rest api.
  • You want to start without paying.
  • You work on Node.js, Self-hosted.
  • You also want graphql api.
KeystoneJS review

Choose Treblle if

  • You need api discovery.
  • You work on web, api.
  • You also want runtime security.
Treblle review

Questions people ask

Is KeystoneJS or Treblle better?
Neither clearly leads. KeystoneJS starts at Free and Treblle at $233/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KeystoneJS or Treblle?
KeystoneJS has a free tier; the other does not. Paid plans start at Free for KeystoneJS and $233/month for Treblle.
Does KeystoneJS or Treblle run on more platforms?
KeystoneJS runs on Node.js, Self-hosted. Treblle runs on web, api.
Can I use KeystoneJS for free?
Yes. KeystoneJS has a free tier, so you can try it without paying. Treblle starts at $233/month.
What is KeystoneJS best used for?
KeystoneJS is most often used for headless cms implementation, content management systems, customizable api-driven applications. Of those, headless cms implementation and content management systems are not what Treblle is typically brought in for.
What can KeystoneJS do that Treblle cannot?
KeystoneJS covers REST API, GraphQL API, Admin interface, Node.js. Treblle covers API discovery, Runtime security, API governance, Compliance monitoring.

Answered from the vendors’ own pages

KeystoneJS: Is KeystoneJS free?

Yes, KeystoneJS is free and open source with no licensing fees. Core platform has no lock-in and is contributed to by 250+ developers.

Source
Treblle: What does Treblle cost?

Treblle's Core plan costs $233/month billed yearly and covers 5 APIs and 5M requests/month; Growth and Enterprise plans use custom pricing for larger request volumes and advanced features.

Source
KeystoneJS: What are hosting costs for KeystoneJS?

KeystoneJS is self-hosted and deployment-agnostic. Hosting costs depend on your chosen deployment platform (Vercel, AWS, Heroku, etc.) and infrastructure, not KeystoneJS itself.

Source
Treblle: Is there a free plan?

Treblle does not offer a free tier; it instead offers a no-credit-card demo rather than free ongoing access.

Source
KeystoneJS: Does KeystoneJS offer paid support?

Enterprise support with tailored options is available from Thinkmill, the company behind KeystoneJS. Pricing details available upon request.

Source
Treblle: How is usage metered?

Plans are metered by number of APIs monitored and requests per minute/month, with the Core plan capped at 500 requests/min and 5M requests/month.

Source
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