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APIs · head to head

Stainless vs Token.io

Stainless logo

Stainless

APIs

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

From
Free
Rated
-
Full reviewWebsite
Token.io logo

Token.io

APIs

Account to account pay by bank infrastructure across the UK and Europe

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Stainless has a free tier, so it costs nothing to try first.
  • Each has a real cost: Stainless starter and Pro plan prices are not published and require contacting the company.; Token.io account to account payments carry no chargeback scheme, so merchants gain cost savings but consumers lose the dispute protection cards provide, which limits adoption in general retail.
  • They diverge on capability: Stainless covers SDK generation, Token.io covers Payment initiation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Stainless and Token.io actually diverge.

Attributes where Stainless and Token.io differ
AttributeStainlessToken.io
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo

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 Stainless

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

Only in Token.io

  • Payment initiation
  • Variable recurring payments
  • Bank network coverage
  • giroAPI membership
  • Payouts and refunds
  • Data and account information
  • Hosted payment pages
  • Reconciliation reporting

What people use each for

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

Stainless

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

Token.io

  • A utility or telecom collecting high value bills where card interchange makes acceptance expensivenot Stainless
  • An investment or trading platform funding customer accounts without card chargeback exposurenot Stainless
  • A payment service provider adding pay by bank to its merchant proposition without building bank connectivitynot Stainless
  • A German merchant using giroAPI scheme access for recurring and future dated bank paymentsnot Stainless

Where each one falls short

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

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.

Token.io

  • Account to account payments carry no chargeback scheme, so merchants gain cost savings but consumers lose the dispute protection cards provide, which limits adoption in general retail.
  • Conversion depends on each bank's own authentication journey, and slow or broken bank redirects cost sales in ways the merchant cannot fix or even always diagnose.
  • Variable recurring payments beyond sweeping are still being rolled out unevenly across banks and markets, so a subscription use case may be supported at one bank and not another.
  • Token.io initiates payments rather than acting as acquirer of record, so merchants still need settlement, safeguarding and reconciliation arrangements elsewhere.
  • Coverage and feature parity vary by country, so a pan European rollout means different capabilities and different bank behaviour in each market rather than one uniform product.

Pricing, plan by plan

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

Token.io

On request
  • Token.io platform$undefined/year
    • Quoted per customer, typically per initiated payment
    • Volume tiers and monthly minimums are common
    • No interchange, so unit cost is usually well below card acceptance

Which should you pick?

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

Choose Token.io if

  • You need payment initiation.
  • You work on Web, API.
  • You also want variable recurring payments.
Token.io review

Questions people ask

Is Stainless or Token.io better?
Neither clearly leads. Stainless starts at Free and Token.io at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Stainless or Token.io?
Stainless has a free tier; the other does not. Paid plans start at Free for Stainless and On request for Token.io.
Does Stainless or Token.io run on more platforms?
Stainless runs on web, api. Token.io runs on Web, API.
Can I use Stainless for free?
Yes. Stainless has a free tier, so you can try it without paying. Token.io starts at On request.
What is Stainless best used for?
Stainless is most often used for generating typed sdks for a public api, producing an mcp server from an existing openapi spec, building an api documentation site alongside client libraries, giving open-source apis a free sdk generation path. Of those, generating typed sdks for a public api and producing an mcp server from an existing openapi spec are not what Token.io is typically brought in for.
What can Stainless do that Token.io cannot?
Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support. Token.io covers Payment initiation, Variable recurring payments, Bank network coverage, giroAPI membership.

Answered from the vendors’ own pages

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
Token.io: Does pay by bank remove card fees?

It removes interchange and scheme fees, so unit cost is normally far below card acceptance, particularly on high value payments.

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
Token.io: What about chargebacks?

There are none. That is the cost saving and the consumer protection gap, which is why it suits bills, top ups and account funding more than retail.

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
Token.io: Is Token.io regulated?

Yes, it is an authorised third party provider under UK and European open banking rules, but it initiates payments rather than holding merchant funds as an acquirer.

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