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Documentation · head to head

Redocly vs Scalar

Redocly logo

Redocly

Documentation

API documentation and OpenAPI governance platform

From
On request
Rated
-
Full reviewWebsite
Scalar logo

Scalar

Documentation

Open source API reference renderer and request client generated entirely from an OpenAPI document

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Scalar has a free tier, so it costs nothing to try first.
  • Each has a real cost: Redocly only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it; Scalar it documents only what an OpenAPI document can express, so guides, authentication walkthroughs and conceptual pages need a second tool and a second navigation.
  • They diverge on capability: Redocly covers OpenAPI reference docs, Scalar covers OpenAPI driven reference.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Redocly and Scalar actually diverge.

Attributes where Redocly and Scalar differ
AttributeRedoclyScalar
Starting priceOn requestFree
Pricing modelFree open-source CLI and Redoc renderer; paid plans for the portal, published on the vendor siteOpen source, no licence fee
Free tierNoYes
PlatformsWeb, Cloud, Self-hostedWeb, macOS, Windows, Linux

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

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 Redocly

  • OpenAPI reference docs
  • Spec linting
  • Developer portal
  • Versioning
  • Try it
  • Git workflow

Only in Scalar

  • OpenAPI driven reference
  • Embedded API client
  • Generated code samples
  • Framework adapters
  • Themeable renderer
  • Self hostable
  • Spec validation

What people use each for

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

Redocly

  • API teams whose reference docs are thin because the spec is thinnot Scalar
  • Organisations enforcing API style rules across many teamsnot Scalar
  • Developer portals combining guides with generated referencenot Scalar

Scalar

  • Replacing default Swagger UI on a public API without moving to a hosted documentation vendornot Redocly
  • A framework that already emits an OpenAPI document and needs a reference page mounted on a routenot Redocly
  • An internal API portal that must run inside a private network with no external callsnot Redocly
  • A team that wants readers to make authenticated test calls without leaving the reference pagenot Redocly

Where each one falls short

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

Redocly

  • Only as useful as your commitment to OpenAPI; teams without a maintained spec get little from it
  • The portal and governance features are paid, while the open-source renderer covers only reference rendering
  • Linting rules are another thing to configure and argue about before value appears
  • Narrower than a general documentation platform, by design

Scalar

  • It documents only what an OpenAPI document can express, so guides, authentication walkthroughs and conceptual pages need a second tool and a second navigation.
  • The output is only as good as the spec, so an API with thin descriptions and missing examples produces a thin reference and the tool cannot compensate.
  • Deep visual customisation goes beyond the theme variables quickly, and matching an existing brand often means overriding styles against internal class names that can change.
  • Running the embedded client against a production API invites readers to send real requests, which means rate limits, test accounts and CORS configuration become your problem.
  • The open source renderer and the hosted platform advance at different rates, so a feature seen in a demo is not necessarily in the package you self host.

Pricing, plan by plan

Redocly

On request

No published plan breakdown. See the Redocly review.

Scalar

Free
  • Open source rendererFree
    • MIT licence, no fee for the renderer
    • Embedded request client
    • Framework adapters

Which should you pick?

Choose Redocly if

  • You need openapi reference docs.
  • You work on Web, Cloud, Self-hosted.
  • You also want spec linting.
Redocly review

Choose Scalar if

  • You need openapi driven reference.
  • You want to start without paying.
  • You work on Web, macOS, Windows, Linux.
  • You also want embedded api client.
Scalar review

Questions people ask

Is Redocly or Scalar better?
Neither clearly leads. Redocly starts at On request and Scalar at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Redocly or Scalar?
Scalar has a free tier; the other does not. Paid plans start at On request for Redocly and Free for Scalar.
Does Redocly or Scalar run on more platforms?
Redocly runs on Web, Cloud, Self-hosted. Scalar runs on Web, macOS, Windows, Linux.
Can I use Scalar for free?
Yes. Scalar has a free tier, so you can try it without paying. Redocly starts at On request.
What is Redocly best used for?
Redocly is most often used for api teams whose reference docs are thin because the spec is thin, organisations enforcing api style rules across many teams, developer portals combining guides with generated reference. Of those, api teams whose reference docs are thin because the spec is thin and organisations enforcing api style rules across many teams are not what Scalar is typically brought in for.
What can Redocly do that Scalar cannot?
Redocly covers OpenAPI reference docs, Spec linting, Developer portal, Versioning. Scalar covers OpenAPI driven reference, Embedded API client, Generated code samples, Framework adapters.

Answered from the vendors’ own pages

Redocly: Is Redocly free?

The Redoc renderer and CLI are open source and free. The developer portal and governance features are paid, with pricing published on the vendor site.

Scalar: Can I use it without paying anything?

Yes. The renderer is open source and self hostable. The hosted platform is a separate paid product.

Redocly: What does the linter do?

It enforces rules on the OpenAPI spec itself in CI — missing descriptions, naming, examples — so a poor spec fails the build rather than becoming poor documentation.

Scalar: Does it replace a full documentation site?

No. It covers API reference. Guides and concepts need a general documentation generator alongside it.

Redocly: Do I need OpenAPI to use it?

Effectively yes. Without a maintained specification there is little for it to work with.

Scalar: Will my reference go out of date?

Only if your OpenAPI document does. The reference is generated, so there is no second copy to forget.

Scalar: Does the embedded client send real requests?

Yes, from the reader browser. Plan for CORS, rate limits and a sandbox environment before publishing.

Scalar: What if my API has no OpenAPI document?

Then this is the wrong tool. Producing an accurate spec is the prerequisite, not an optional step.

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