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Documentation · head to head

ReadMe vs Swagger/OpenAPI

ReadMe logo

ReadMe

Documentation

Hosted developer hub priced per API project, with docs personalised from live request logs

From
Free
Rated
-
Full reviewWebsite
Swagger/OpenAPI logo

Swagger/OpenAPI

APIs

API specification and documentation framework using OpenAPI standard

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: ReadMe pricing is per project, so an organisation with several distinct APIs multiplies the monthly bill rather than adding seats, and the sensible workaround, merging unrelated APIs into one documentation project, distorts the information architecture to fit the invoice.; Swagger/OpenAPI the OpenAPI Specification itself is licensed under Apache License 2.0 and free to use; SwaggerHub is a separate paid tool built on top of it
  • They diverge on capability: ReadMe covers OpenAPI reference, Swagger/OpenAPI covers OpenAPI Specification.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which ReadMe and Swagger/OpenAPI actually diverge.

Attributes where ReadMe and Swagger/OpenAPI differ
AttributeReadMeSwagger/OpenAPI
Pricing modelPer project per monthfreemium
PlatformsWebWeb, CLI, Desktop
CategoryDocumentationAPIs
FoundedUnknown2001

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 ReadMe

  • OpenAPI reference
  • Try It playground
  • API metrics
  • Personalised docs
  • Versioning
  • Guides and recipes
  • Git sync via rdme
  • Changelog and support widget

Only in Swagger/OpenAPI

  • OpenAPI Specification
  • Interactive Documentation
  • Code Generation
  • GitHub
  • GitLab
  • Jenkins
  • IDE plugins
  • Web support

What people use each for

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

ReadMe

  • Publishing a public API reference where a developer can send a live request with their own key from the documentation pagenot Swagger/OpenAPI
  • Cutting support load by showing an integrating developer their own recent failing requests next to the endpoint descriptionnot Swagger/OpenAPI
  • Keeping documentation versions aligned with API versions so customers on an older release read the matching referencenot Swagger/OpenAPI
  • Shipping documentation from the same pull request as the code change using the rdme command line tool in CInot Swagger/OpenAPI

Swagger/OpenAPI

  • API Developmentnot ReadMe
  • API Gatewaynot ReadMe
  • API Testingnot ReadMe
  • API Documentationnot ReadMe
  • Microservicesnot ReadMe

Where each one falls short

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

ReadMe

  • Pricing is per project, so an organisation with several distinct APIs multiplies the monthly bill rather than adding seats, and the sensible workaround, merging unrelated APIs into one documentation project, distorts the information architecture to fit the invoice.
  • The metrics and personalisation features require your API to stream request logs to ReadMe, which means production request metadata leaves your infrastructure and needs a scrubbing layer plus a security review before anything is switched on.
  • Single sign-on and private documentation sit on the higher tier, so a company that only needs to gate partner documentation behind SAML pays a large step up for one control.
  • The platform is built for describing REST APIs, and long-form product manuals, internal knowledge bases or non-OpenAPI protocols fit it badly, so most customers end up running a second documentation tool alongside it.
  • Theming is bounded by ReadMe templates and limited custom CSS, so a documentation site that must match a strongly designed marketing site will not get there without compromise.
  • Content uses ReadMe-specific Markdown extensions and platform features, so migrating away is an export plus a rewrite rather than moving a folder of Markdown files.

Swagger/OpenAPI

  • The OpenAPI Specification itself is licensed under Apache License 2.0 and free to use; SwaggerHub is a separate paid tool built on top of it

Pricing, plan by plan

ReadMe

Free
  • FreeFree
    • One project on a ReadMe subdomain
    • OpenAPI reference and guides
    • Basic editing and publishing
  • Startup$99/month
    • One project
    • Custom domain
    • API metrics from request logs
  • Business$399/month
    • One project
    • SAML single sign-on
    • Private and partner-only documentation
  • Enterprise$undefined/year
    • Multiple projects under one contract
    • Negotiated support and uptime terms
    • Security review and custom deployment questions

Swagger/OpenAPI

Free
  • Open SourceFree
    • OpenAPI specification
    • Community tools
  • SwaggerHub FreeFree
    • Cloud editor
    • API mocking
    • API testing
  • SwaggerHub Pro$75/monthly
    • Team collaboration
    • Advanced mocking
    • Analytics

Which should you pick?

Choose ReadMe if

  • You need openapi reference.
  • You want to start without paying.
  • You also want try it playground.
ReadMe review

Choose Swagger/OpenAPI if

  • You need openapi specification.
  • You want to start without paying.
  • You work on Web, CLI, Desktop.
  • You also want interactive documentation.
Swagger/OpenAPI review

Questions people ask

Is ReadMe or Swagger/OpenAPI better?
Neither clearly leads. ReadMe starts at Free and Swagger/OpenAPI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, ReadMe or Swagger/OpenAPI?
ReadMe starts at Free and Swagger/OpenAPI at Free.
Does ReadMe or Swagger/OpenAPI run on more platforms?
ReadMe runs on Web. Swagger/OpenAPI runs on Web, CLI, Desktop.
Can I use ReadMe for free?
Both have a free tier, so you can try either at no cost before committing.
What is ReadMe best used for?
ReadMe is most often used for publishing a public api reference where a developer can send a live request with their own key from the documentation page, cutting support load by showing an integrating developer their own recent failing requests next to the endpoint description, keeping documentation versions aligned with api versions so customers on an older release read the matching reference, shipping documentation from the same pull request as the code change using the rdme command line tool in ci. Of those, publishing a public api reference where a developer can send a live request with their own key from the documentation page and cutting support load by showing an integrating developer their own recent failing requests next to the endpoint description are not what Swagger/OpenAPI is typically brought in for.
What can ReadMe do that Swagger/OpenAPI cannot?
ReadMe covers OpenAPI reference, Try It playground, API metrics, Personalised docs. Swagger/OpenAPI covers OpenAPI Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

ReadMe: Is ReadMe priced per user?

No. It is priced per project, meaning per documented API. Team size does not change the bill, and a second API generally does.

Swagger/OpenAPI: Is Swagger UI free to use?

Swagger UI is an open source tool with source code publicly available on GitHub at no cost. It is one of thousands of free open source projects in the Swagger ecosystem.

Source
ReadMe: Do I have to send my API logs to ReadMe?

Only for metrics and personalised documentation. The reference, guides and playground work without it, but the features that most distinguish the product are the ones that need the log stream.

Swagger/OpenAPI: What commercial Swagger products are available beyond the open source tools?

Swagger offers Swagger for Teams for streamlined API workflow with interactive editors and hosted documentation, and Swagger Enterprise for organizations needing secure on-premise or cloud-based environments. Specific pricing requires contacting sales.

Source
ReadMe: Can I keep documentation in Git?

Yes. The rdme command line tool synchronises Markdown and OpenAPI files from a repository, so documentation can ship in the same pull request as the code.

Swagger/OpenAPI: Are there commercial versions that build on the open source Swagger tools?

Yes, commercial Swagger products integrate the core functionality of Swagger open source tools (Editor, UI, and Codegen) with advanced capabilities for team collaboration, standards enforcement, and enterprise features.

Source
ReadMe: Can I self-host it?

No. ReadMe is a hosted product only, so buyers with a hard on-premises requirement need a different platform.

Swagger/OpenAPI: Is there a trial available for Swagger commercial products?

A Start Trial call-to-action is available on the Swagger website, but specific trial duration and terms are not disclosed on the product pages.

Source
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