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APIs · head to head

Strapi vs Swagger UI

Strapi logo

Strapi

APIs

Headless CMS with REST and GraphQL APIs

From
$35/month
Rated
-
Full reviewWebsite
Swagger UI logo

Swagger UI

Developer Tools

Interactive API documentation generated from OpenAPI specs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Swagger UI has a free tier, so it costs nothing to try first.
  • Each has a real cost: Strapi cloud pricing is per project, not per account, so a second project doubles the bill; Swagger UI only as good as the specification: a thin OpenAPI file produces thin documentation
  • They diverge on capability: Strapi covers REST API, Swagger UI covers OpenAPI rendering.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Strapi and Swagger UI actually diverge.

Attributes where Strapi and Swagger UI differ
AttributeStrapiSwagger UI
Starting price$35/monthFree
Pricing modelsubscriptionOpen source, no licence fee
Free tierNoYes
PlatformsNode.js, Cloud, Self-hosted, DockerWeb, Self-hosted, Docker
CategoryAPIsDeveloper Tools
Founded2015Unknown

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 Strapi

  • REST API
  • GraphQL API
  • Content management
  • PostgreSQL
  • MySQL
  • MongoDB
  • AWS
  • Webhooks

Only in Swagger UI

  • OpenAPI rendering
  • Try it out
  • Schema display
  • Self-hostable

What people use each for

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

Strapi

  • Running a self hosted headless CMS with a REST or GraphQL APInot Swagger UI
  • Giving editors a content admin panel over a custom content modelnot Swagger UI

Swagger UI

  • Publishing API documentation that stays in step with the specificationnot Strapi
  • Letting developers try endpoints before writing any client codenot Strapi
  • Internal API discovery across teamsnot Strapi

Where each one falls short

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

Strapi

  • Cloud pricing is per project, not per account, so a second project doubles the bill
  • Starter at $35 a month allows 100,000 API requests, and overage is $1.50 per 25,000
  • Extra bandwidth is $30 per 100 GB and extra asset storage $0.60 per GB
  • Backups start at the Pro plan, weekly, and only become daily at Business
  • An uptime SLA is Business only, at $450 a month per project
  • Additional environments cost $60 a month on Pro and $300 a month on Business

Swagger UI

  • Only as good as the specification: a thin OpenAPI file produces thin documentation
  • Default presentation is dated compared with modern documentation tools
  • Large specifications render slowly and become hard to navigate
  • Try it out against production needs care with authentication and CORS, and is often disabled as a result

Pricing, plan by plan

Strapi

$35/month
  • Starter$35/month
    • 100k API requests
    • 50 GB asset storage
    • 50 GB asset bandwidth
  • Pro$90/month
    • 1M API requests
    • 250 GB asset storage
    • 500 GB asset bandwidth
  • Business$450/month
    • 10M API requests
    • 1000 GB asset storage
    • 1000 GB asset bandwidth

Swagger UI

Free
  • Swagger UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Strapi if

  • You need rest api.
  • You work on Node.js, Cloud, Self-hosted, Docker.
  • You also want graphql api.
Strapi review

Choose Swagger UI if

  • You need openapi rendering.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want try it out.
Swagger UI review

Questions people ask

Is Strapi or Swagger UI better?
Neither clearly leads. Strapi starts at $35/month and Swagger UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Strapi or Swagger UI?
Swagger UI has a free tier; the other does not. Paid plans start at $35/month for Strapi and Free for Swagger UI.
Does Strapi or Swagger UI run on more platforms?
Strapi runs on Node.js, Cloud, Self-hosted, Docker. Swagger UI runs on Web, Self-hosted, Docker.
Can I use Swagger UI for free?
Yes. Swagger UI has a free tier, so you can try it without paying. Strapi starts at $35/month.
What is Strapi best used for?
Strapi is most often used for running a self hosted headless cms with a rest or graphql api, giving editors a content admin panel over a custom content model. Of those, running a self hosted headless cms with a rest or graphql api and giving editors a content admin panel over a custom content model are not what Swagger UI is typically brought in for.
What can Strapi do that Swagger UI cannot?
Strapi covers REST API, GraphQL API, Content management, PostgreSQL. Swagger UI covers OpenAPI rendering, Try it out, Schema display, Self-hostable.

Answered from the vendors’ own pages

Strapi: How much do API request overages cost?

Additional API requests beyond the plan limit cost $1.50 per 25000 requests. Extra asset storage costs $0.60 per GB, and additional bandwidth costs $30 per 100 GB.

Source
Swagger UI: Is Swagger UI free?

Yes, open source under the Apache 2.0 licence. SmartBear sells commercial SwaggerHub separately.

Strapi: Is yearly billing available?

Yes, yearly billing saves up to 17% compared to monthly billing on Strapi Cloud plans.

Source
Swagger UI: What is the difference between Swagger and OpenAPI?

OpenAPI is the specification format; Swagger is the toolset around it, including Swagger UI. The specification was renamed from Swagger to OpenAPI in 2016.

Strapi: What is included with the Pro plan?

The Pro plan costs $90 per month per project and includes 1M API requests, 250 GB asset storage, 500 GB bandwidth, multi-environment support, weekly backups, and manual backups.

Source
Swagger UI: Can Swagger UI make real API calls?

Yes, through its try-it-out control, though authentication and CORS configuration often mean it is disabled for production APIs.

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