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APIs · head to head

Lithic vs Swagger/OpenAPI

Lithic logo

Lithic

APIs

API-first card issuing platform with direct Visa, Mastercard and Amex network connections

From
On request
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

  • Only Swagger/OpenAPI has a free tier, so it costs nothing to try first.
  • Each has a real cost: Lithic pricing is entirely undisclosed, so a company cannot compare total cost against Marqeta, Galileo or Highnote without a sales conversation.; 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: Lithic covers Direct network connections, Swagger/OpenAPI covers OpenAPI Specification.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Lithic and Swagger/OpenAPI differ
AttributeLithicSwagger/OpenAPI
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, APIWeb, CLI, Desktop
FoundedUnknown2001

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 Lithic

  • Direct network connections
  • Processor Client mode
  • Lithic Program Management
  • Card lifecycle APIs
  • Sandbox environment
  • Real-time authorization controls

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.

Lithic

  • A fintech wanting direct Visa or Mastercard network access rather than routing through a third-party processornot Swagger/OpenAPI
  • A company that already holds its own issuing licence and wants API access without full programme managementnot Swagger/OpenAPI
  • A neobank or expense platform wanting Lithic to manage bank and network relationships end to endnot Swagger/OpenAPI
  • A product team prototyping a card programme in sandbox before committing to a launchnot Swagger/OpenAPI

Swagger/OpenAPI

  • API Developmentnot Lithic
  • API Gatewaynot Lithic
  • API Testingnot Lithic
  • API Documentationnot Lithic
  • Microservicesnot Lithic

Where each one falls short

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

Lithic

  • Pricing is entirely undisclosed, so a company cannot compare total cost against Marqeta, Galileo or Highnote without a sales conversation.
  • Choosing Processor Client mode still leaves the company responsible for holding its own issuing licence and managing the regulatory relationship, which is a substantial undertaking many teams underestimate.
  • As with any card infrastructure provider, an outage or network issue at Lithic becomes a direct outage for every card programme built on it, and a customer has limited visibility into root cause during an incident.
  • Building a card programme on API infrastructure requires real engineering investment; it is not a plug-and-play product for a non-technical team.
  • Switching card infrastructure providers after launch is a major undertaking involving card reissuance and programme migration, so the initial choice carries lasting lock-in.

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

Lithic

On request
  • Lithic$undefined/year
    • Volume and interchange-based pricing, not published
    • Separate Processor Client and Program Management pricing tracks
    • Custom quote required via sales

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 Lithic if

  • You need direct network connections.
  • You work on Web, API.
  • You also want processor client mode.
Lithic 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 Lithic or Swagger/OpenAPI better?
Neither clearly leads. Lithic starts at On request and Swagger/OpenAPI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lithic or Swagger/OpenAPI?
Swagger/OpenAPI has a free tier; the other does not. Paid plans start at On request for Lithic and Free for Swagger/OpenAPI.
Does Lithic or Swagger/OpenAPI run on more platforms?
Lithic runs on Web, API. Swagger/OpenAPI runs on Web, CLI, Desktop.
Can I use Swagger/OpenAPI for free?
Yes. Swagger/OpenAPI has a free tier, so you can try it without paying. Lithic starts at On request.
What is Lithic best used for?
Lithic is most often used for a fintech wanting direct visa or mastercard network access rather than routing through a third-party processor, a company that already holds its own issuing licence and wants api access without full programme management, a neobank or expense platform wanting lithic to manage bank and network relationships end to end, a product team prototyping a card programme in sandbox before committing to a launch. Of those, a fintech wanting direct visa or mastercard network access rather than routing through a third-party processor and a company that already holds its own issuing licence and wants api access without full programme management are not what Swagger/OpenAPI is typically brought in for.
What can Lithic do that Swagger/OpenAPI cannot?
Lithic covers Direct network connections, Processor Client mode, Lithic Program Management, Card lifecycle APIs. Swagger/OpenAPI covers OpenAPI Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

Lithic: Does Lithic publish pricing?

No, pricing is volume-based and requires a sales conversation.

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
Lithic: What is the difference between Processor Client and Program Management?

Processor Client suits companies with their own issuing licence and bank relationships; Program Management is for companies wanting Lithic to coordinate those relationships on their behalf.

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
Lithic: Which networks does it connect to?

Visa, Mastercard and American Express directly.

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
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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