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Thought Machine vs Yarn

Thought Machine logo

Thought Machine

Technology

Cloud native core banking where products are written as smart contracts

From
On request
Free plan
No
Full reviewWebsite
Yarn logo

Yarn

Developer Tools

Fast, reliable, and secure dependency management

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Yarn has a free tier, so it costs nothing to try first.
  • Each has a real cost: Thought Machine a core replacement is a two to four year programme at an established bank, and the licence is a minority of total cost against system integrator fees, parallel running and data migration.; Yarn yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Thought Machine and Yarn actually diverge.

Attributes where Thought Machine and Yarn differ
AttributeThought MachineYarn
Starting priceOn requestFree
Pricing modelquotefree
Free tierNoYes
PlatformsWeb, API, CloudWeb, Linux, macOS, Windows
CategoryTechnologyDeveloper Tools
FoundedUnknown2016

Identical on both: user rating (Not yet rated).

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 Thought Machine

  • Smart contract product engine
  • Cloud native architecture
  • Real time ledger
  • Vault Payments
  • API first design
  • Multi entity and multi currency
  • Product versioning and testing
  • Configurable posting rules

Only in Yarn

Nothing recorded that Thought Machine does not also cover.

What people use each for

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

Thought Machine

  • A large bank launching a separate digital brand on a clean core rather than migrating the back booknot Yarn
  • A bank whose product launches are blocked by vendor change requests on a legacy corenot Yarn
  • An institution needing real time balances and postings for instant payment obligationsnot Yarn
  • A group consolidating multiple country cores onto one multi entity platformnot Yarn

Yarn

  • Monorepo teams managing dependencies across 50+ interdependent packagesnot Thought Machine
  • Enterprise JavaScript projects ensuring reproducible builds across CI/CDnot Thought Machine
  • Open-source projects with plugin ecosystems coordinating versionsnot Thought Machine
  • Teams requiring consistent package installs regardless of network conditionsnot Thought Machine

Where each one falls short

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

Thought Machine

  • A core replacement is a two to four year programme at an established bank, and the licence is a minority of total cost against system integrator fees, parallel running and data migration.
  • The smart contract model presumes a bank can write and maintain Python financial products, and institutions without that engineering capability end up outsourcing the very flexibility they bought.
  • Cloud infrastructure cost sits with the bank and is not trivial at scale, so total cost of ownership comparisons against a hosted legacy core often miss a large recurring line.
  • Thought Machine has made two rounds of job cuts pursuing profitability, which is a legitimate supplier stability concern for a system a bank expects to run for fifteen years.
  • The functional footprint is core ledger and product engine, so origination, collections, regulatory reporting and channels all come from other vendors, and the integration estate around Vault is the bank's problem to design and own.

Yarn

  • Yarn 2+ (Berry) has limited ESM support which can be a constraint for some projects
  • Smaller ecosystem and community compared to npm, though still substantial

Pricing, plan by plan

Thought Machine

On request
  • Vault Core$undefined/year
    • Quoted per institution, typically on account volumes or annual contract value
    • Implementation and system integrator costs commonly exceed the licence fee
    • Cloud infrastructure costs are the bank's and are not included

Yarn

Free

No published plan breakdown. See the Yarn review.

Which should you pick?

Choose Thought Machine if

  • You need smart contract product engine.
  • You work on Web, API, Cloud.
  • You also want cloud native architecture.
Thought Machine review

Choose Yarn if

  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows.
Yarn review

Questions people ask

Is Thought Machine or Yarn better?
Neither clearly leads. Thought Machine starts at On request and Yarn at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Thought Machine or Yarn?
Yarn has a free tier; the other does not. Paid plans start at On request for Thought Machine and Free for Yarn.
Does Thought Machine or Yarn run on more platforms?
Thought Machine runs on Web, API, Cloud. Yarn runs on Web, Linux, macOS, Windows.
Can I use Yarn for free?
Yes. Yarn has a free tier, so you can try it without paying. Thought Machine starts at On request.
What is Thought Machine best used for?
Thought Machine is most often used for a large bank launching a separate digital brand on a clean core rather than migrating the back book, a bank whose product launches are blocked by vendor change requests on a legacy core, an institution needing real time balances and postings for instant payment obligations, a group consolidating multiple country cores onto one multi entity platform. Of those, a large bank launching a separate digital brand on a clean core rather than migrating the back book and a bank whose product launches are blocked by vendor change requests on a legacy core are not what Yarn is typically brought in for.
What can Thought Machine do that Yarn cannot?
Thought Machine covers Smart contract product engine, Cloud native architecture, Real time ledger, Vault Payments.

Answered from the vendors’ own pages

Thought Machine: Is Vault Core genuinely cloud native?

Yes. It is containerised, runs on Kubernetes on public cloud, and posts in real time rather than in overnight batch.

Yarn: What is Yarn's main advantage over npm?

Yarn downloads packages in parallel, significantly reducing installation time. It uses a yarn.lock file for deterministic installs, ensuring identical package versions across machines and preventing version conflicts common with npm.

Source
Thought Machine: How long does a migration take?

Eighteen months at the absolute fastest for a narrow greenfield launch; two to four years for a phased migration at an established bank.

Yarn: Can I use Yarn in offline environments?

Yes, Yarn supports secure offline environments. The yarn.lock file enables reproducible installs without requiring new downloads.

Source
Thought Machine: Does the licence fee represent the total cost?

No. Implementation, system integration, parallel running and cloud infrastructure typically cost more than the licence over the programme.

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