Softwr

APIs · head to head

Neonomics vs Stainless

Neonomics logo

Neonomics

APIs

Nordic open banking payments and data, now with UK coverage through Ordo

From
On request
Rated
-
Full reviewWebsite
Stainless logo

Stainless

APIs

Generates client SDKs, API docs, and MCP servers from an OpenAPI spec

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stainless has a free tier, so it costs nothing to try first.
  • Each has a real cost: Neonomics coverage outside the Nordics and the UK is comparatively shallow, so a pan European merchant will find gaps and inconsistent bank behaviour in southern and eastern markets.; Stainless starter and Pro plan prices are not published and require contacting the company.
  • They diverge on capability: Neonomics covers Payment initiation, Stainless covers SDK generation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Neonomics and Stainless actually diverge.

Attributes where Neonomics and Stainless differ
AttributeNeonomicsStainless
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes

Identical on both: platforms (Web, API), 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 Neonomics

  • Payment initiation
  • Account information
  • Nordic bank depth
  • UK coverage via Ordo
  • Variable recurring payments
  • Request to pay
  • White label journeys
  • Reconciliation data

Only in Stainless

  • SDK generation
  • MCP server generation
  • Docs site generation
  • Webhooks and streaming support
  • Automated unit tests
  • Git integration

What people use each for

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

Neonomics

  • A Norwegian or Swedish merchant collecting payments directly from bank accounts to avoid card feesnot Stainless
  • A debt collection agency sending request to pay messages instead of chasing bank transfers manuallynot Stainless
  • A software vendor embedding pay by bank into an accounting or invoicing product for Nordic customersnot Stainless
  • A business needing both UK and Nordic bank payment coverage from one suppliernot Stainless

Stainless

  • Generating typed SDKs for a public APInot Neonomics
  • Producing an MCP server from an existing OpenAPI specnot Neonomics
  • Building an API documentation site alongside client librariesnot Neonomics
  • Giving open-source APIs a free SDK generation pathnot Neonomics

Where each one falls short

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

Neonomics

  • Coverage outside the Nordics and the UK is comparatively shallow, so a pan European merchant will find gaps and inconsistent bank behaviour in southern and eastern markets.
  • It is a small company relative to Tink and TrueLayer, so supplier viability and the depth of engineering support behind bank API changes are genuine procurement questions.
  • Payment initiation only means the merchant handles settlement, reconciliation and refunds, and there is no chargeback framework to fall back on.
  • Integrating a recently acquired UK business means two regulatory entities and, for a period, two technology stacks, so cross market feature parity is a promise rather than an existing state.
  • Conversion is governed by each bank's own authentication experience, and Nordic BankID flows behave differently from UK app redirects, so a single UX cannot be assumed across the footprint.

Stainless

  • Starter and Pro plan prices are not published and require contacting the company.
  • The free plan caps APIs at 25 endpoints, which excludes larger production APIs.
  • Overage charges apply per SDK/endpoint/month once limits are exceeded, which can make costs unpredictable at scale.

Pricing, plan by plan

Neonomics

On request
  • Neonomics platform$undefined/year
    • Quoted per customer, typically per initiated payment or per API call
    • Volume commitments and monthly minimums are common
    • Payment initiation only; merchant handles settlement and refunds

Stainless

Free
  • FreeFree
    • Up to 5 generators (SDKs, docs, or MCP servers)
    • 5 seats
    • APIs with 25 or fewer endpoints
  • Starter$undefined/mo
    • Unlimited generators
    • Expanded seats
    • Private SDKs of any size
  • Pro$undefined/mo
    • Custom enterprise features and pricing
  • Enterprise$undefined/mo
    • Dedicated support
    • SOC 2 compliance reports
    • Purchase order/invoicing with negotiable terms

Which should you pick?

Choose Neonomics if

  • You need payment initiation.
  • You work on Web, API.
  • You also want account information.
Neonomics review

Choose Stainless if

  • You need sdk generation.
  • You want to start without paying.
  • You work on web, api.
  • You also want mcp server generation.
Stainless review

Questions people ask

Is Neonomics or Stainless better?
Neither clearly leads. Neonomics starts at On request and Stainless at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Neonomics or Stainless?
Stainless has a free tier; the other does not. Paid plans start at On request for Neonomics and Free for Stainless.
Does Neonomics or Stainless run on more platforms?
Neonomics runs on Web, API. Stainless runs on web, api.
Can I use Stainless for free?
Yes. Stainless has a free tier, so you can try it without paying. Neonomics starts at On request.
What is Neonomics best used for?
Neonomics is most often used for a norwegian or swedish merchant collecting payments directly from bank accounts to avoid card fees, a debt collection agency sending request to pay messages instead of chasing bank transfers manually, a software vendor embedding pay by bank into an accounting or invoicing product for nordic customers, a business needing both uk and nordic bank payment coverage from one supplier. Of those, a norwegian or swedish merchant collecting payments directly from bank accounts to avoid card fees and a debt collection agency sending request to pay messages instead of chasing bank transfers manually are not what Stainless is typically brought in for.
What can Neonomics do that Stainless cannot?
Neonomics covers Payment initiation, Account information, Nordic bank depth, UK coverage via Ordo. Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support.

Answered from the vendors’ own pages

Neonomics: Is Neonomics authorised in the UK?

Yes, through the acquisition of Ordo, an FCA authorised open banking payments firm, approved by the FCA and the Norwegian regulator.

Stainless: Is there a free plan, and what are its limits?

Yes. The Free plan supports up to 5 generators, 5 seats, APIs with 25 or fewer endpoints, and 100 preview builds per month, with email support.

Source
Neonomics: Does it support variable recurring payments?

Yes in the UK through the Ordo capability, subject to which banks support commercial VRP; support elsewhere is more limited.

Stainless: Who owns the generated SDK code?

The generated SDK code is owned by the customer and published by Stainless under the Apache 2.0 license.

Source
Neonomics: Does Neonomics hold merchant funds?

No. It initiates payments; settlement, reconciliation and refunds remain with the merchant or its payment provider.

Stainless: What happens if I exceed my plan's endpoint limit?

Customers exceeding their endpoint limits are billed per SDK, per endpoint, per month for the overage.

Source
Share

Related pages

More on Neonomics

More on Stainless

Keep looking

Other head to heads