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APIs · head to head

Stainless vs TrueLayer

Stainless logo

Stainless

APIs

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

From
Free
Rated
-
Full reviewWebsite
TrueLayer logo

TrueLayer

APIs

Open banking payments and data across the UK and Europe, with the largest share of UK variable recurring payments

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.; TrueLayer variable recurring payments, the strongest reason to choose TrueLayer, is a UK construct, and European businesses expecting the same capability in their market will not get it on the same timetable.
  • They diverge on capability: Stainless covers SDK generation, TrueLayer covers Pay by bank.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Stainless and TrueLayer actually diverge.

Attributes where Stainless and TrueLayer differ
AttributeStainlessTrueLayer
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
Platformsweb, apiWeb, iOS, Android

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 Stainless

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

Only in TrueLayer

  • Pay by bank
  • Variable recurring payments
  • Payouts and refunds
  • Account information
  • Account name verification
  • Signup and KYC support
  • Multi-country coverage
  • Hosted payment page

What people use each for

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

Stainless

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

TrueLayer

  • A UK subscription or top-up business that wants card-like recurring collection over bank rails using variable recurring paymentsnot Stainless
  • A trading or crypto platform funding accounts instantly by bank transfer where card deposits carry chargeback risknot Stainless
  • A marketplace paying sellers out to verified bank accounts with name checking to reduce misdirected paymentsnot Stainless
  • A lender verifying income and affordability from bank transaction data rather than uploaded statementsnot 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.

TrueLayer

  • Variable recurring payments, the strongest reason to choose TrueLayer, is a UK construct, and European businesses expecting the same capability in their market will not get it on the same timetable.
  • Payment conversion varies substantially by bank, and a bank with a slow or broken authentication journey drags results down regardless of vendor, so aggregate coverage numbers say little about your actual mix.
  • Pay by bank has no chargeback mechanism, which merchants like until a customer disputes a purchase and finds no scheme protection, making it a poor fit for categories where buyers expect card style recourse.
  • Pricing is unpublished and varies by market and product, so multi-country merchants cannot model cost without a full sales engagement and often find rates differ significantly between countries.
  • Open banking authentication requires the customer to leave the checkout and authorise in their banking app, and that redirect remains the largest source of drop-off compared with a stored card.

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

TrueLayer

On request
  • TrueLayer Payments and Data$undefined/year
    • Per-payment fees quoted by volume, market and product
    • Separate commercial terms for payment initiation, VRP and account information
    • Platform and minimum commitment terms negotiated per contract

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 TrueLayer if

  • You need pay by bank.
  • You work on Web, iOS, Android.
  • You also want variable recurring payments.
TrueLayer review

Questions people ask

Is Stainless or TrueLayer better?
Neither clearly leads. Stainless starts at Free and TrueLayer at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Stainless or TrueLayer?
Stainless has a free tier; the other does not. Paid plans start at Free for Stainless and On request for TrueLayer.
Does Stainless or TrueLayer run on more platforms?
Stainless runs on web, api. TrueLayer runs on Web, iOS, Android.
Can I use Stainless for free?
Yes. Stainless has a free tier, so you can try it without paying. TrueLayer 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 TrueLayer is typically brought in for.
What can Stainless do that TrueLayer cannot?
Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support. TrueLayer covers Pay by bank, Variable recurring payments, Payouts and refunds, Account information.

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
TrueLayer: Is VRP available outside the UK?

No. Variable recurring payments are a UK capability. EU adoption is on a slower path, with UK commercial VRP expanding into ecommerce during 2026.

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
TrueLayer: What does TrueLayer cost?

Not published. Per-payment fees are quoted by volume, market and product, usually with a platform component and a minimum commitment.

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
TrueLayer: Are there chargebacks on pay by bank?

No. Bank transfers have no card scheme chargeback mechanism, which removes that cost but also removes buyer recourse, so it suits some categories and not others.

TrueLayer: Which countries are covered?

The UK plus a substantial set of European markets under PSD2, though bank-level coverage and conversion vary by country and should be checked for your specific mix.

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