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APIs · head to head

Griffin vs Swagger

Griffin logo

Griffin

APIs

UK banking-as-a-service from a company that holds its own full banking licence

From
£100/month
Rated
-
Full reviewWebsite
Swagger logo

Swagger

APIs

API design and documentation platform for building, testing, and managing APIs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Swagger has a free tier, so it costs nothing to try first.
  • Each has a real cost: Griffin platform banking carries a one-off onboarding fee from 15,000 pounds and a 3,500 pound monthly minimum, which prices out early-stage companies entirely.; Swagger specific pricing details not published on main website; requires accessing pricing page or contacting sales
  • They diverge on capability: Griffin covers Bank accounts by API, Swagger covers API Specification.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Griffin and Swagger actually diverge.

Attributes where Griffin and Swagger differ
AttributeGriffinSwagger
Starting price£100/monthFree
Pricing modelPer month with usage drawdownfreemium
Free tierNoYes
PlatformsWeb, REST APIWeb, CLI, Desktop
FoundedUnknown2011

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 Griffin

  • Bank accounts by API
  • UK payment rails
  • Integrated ledger
  • Automated onboarding
  • Debit cards
  • Interest on balances

Only in Swagger

  • API Specification
  • Interactive Documentation
  • Code Generation
  • GitHub
  • GitLab
  • Azure DevOps
  • Jira
  • Web support

What people use each for

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

Griffin

  • A wealth platform that must hold client money in a licensed bank rather than an EMI safeguarding accountnot Swagger
  • A lender wanting UK accounts and payment rails without becoming a bank itselfnot Swagger
  • A fintech burned by sponsor bank instability that wants the deposit holder and the API provider to be the same entitynot Swagger
  • A platform needing sub-account ledgering for pooled client funds with a clean audit trailnot Swagger

Swagger

  • API Developmentnot Griffin
  • API Gatewaynot Griffin
  • API Testingnot Griffin
  • API Documentationnot Griffin
  • Microservicesnot Griffin

Where each one falls short

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

Griffin

  • Platform banking carries a one-off onboarding fee from 15,000 pounds and a 3,500 pound monthly minimum, which prices out early-stage companies entirely.
  • It is UK-only, so a business with European or US operations needs a second banking provider and a second integration for those entities.
  • It is a young bank with a small balance sheet relative to incumbents, and enterprise counterparties still ask hard questions about concentration risk.
  • Holding a banking licence means Griffin applies bank-grade due diligence to its own clients, so onboarding is slower and more selective than an EMI-based provider.
  • Feature breadth is narrower than long-established providers, particularly in card programme management and in payment types beyond core UK rails.

Swagger

  • Specific pricing details not published on main website; requires accessing pricing page or contacting sales

Pricing, plan by plan

Griffin

£100/month
  • Business Banking$100/month
    • From 100 pounds per month
    • Interest or commission from around 1.75 percent AER variable
    • Operational accounts and UK payment rails
  • Platform Banking$3500/month
    • One-off onboarding fee from 15,000 pounds
    • Minimum monthly spend of 3,500 pounds, drawn down by usage
    • Higher committed tiers at 5,000 and 10,000 pounds with discounts
  • Enterprise$undefined/month
    • Custom pricing
    • Bespoke account structures and volumes
    • Negotiated interest or commission share

Swagger

Free
  • FreeFree
    • OpenAPI specification
    • Swagger UI
    • API documentation
  • Professional$20/monthly
    • Advanced features
    • Team collaboration
    • API testing
  • Enterprise$undefined/monthly
    • Custom deployment
    • Advanced security
    • Dedicated support

Which should you pick?

Choose Griffin if

  • You need bank accounts by api.
  • You work on Web, REST API.
  • You also want uk payment rails.
Griffin review

Choose Swagger if

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

Questions people ask

Is Griffin or Swagger better?
Neither clearly leads. Griffin starts at £100/month and Swagger at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Griffin or Swagger?
Swagger has a free tier; the other does not. Paid plans start at £100/month for Griffin and Free for Swagger.
Does Griffin or Swagger run on more platforms?
Griffin runs on Web, REST API. Swagger runs on Web, CLI, Desktop.
Can I use Swagger for free?
Yes. Swagger has a free tier, so you can try it without paying. Griffin starts at £100/month.
What is Griffin best used for?
Griffin is most often used for a wealth platform that must hold client money in a licensed bank rather than an emi safeguarding account, a lender wanting uk accounts and payment rails without becoming a bank itself, a fintech burned by sponsor bank instability that wants the deposit holder and the api provider to be the same entity, a platform needing sub-account ledgering for pooled client funds with a clean audit trail. Of those, a wealth platform that must hold client money in a licensed bank rather than an emi safeguarding account and a lender wanting uk accounts and payment rails without becoming a bank itself are not what Swagger is typically brought in for.
What can Griffin do that Swagger cannot?
Griffin covers Bank accounts by API, UK payment rails, Integrated ledger, Automated onboarding. Swagger covers API Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

Griffin: Is Griffin actually a bank?

Yes. It received a UK banking licence with restrictions in March 2023 and a full licence in March 2024 after exiting mobilisation.

Swagger: How much does Swagger cost?

Swagger does not publish specific pricing details on its main website. A free tier is available with a Start Free Trial option. For detailed pricing information, users must visit the dedicated pricing page or contact Swagger sales directly.

Source
Griffin: What does it cost?

Business banking from 100 pounds a month; platform banking from a 15,000 pound onboarding fee plus a 3,500 pound monthly minimum drawn down by usage.

Swagger: Does Swagger offer a free plan?

Yes, Swagger offers a free tier described as simple, useful, and easy to master for API client functionality. Exact feature details and limitations are not specified on the homepage.

Source
Griffin: Does it cover Europe?

No. Griffin is a UK bank serving UK accounts and UK payment rails.

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