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APIs · head to head

Episode Six vs Thunder Client

Episode Six logo

Episode Six

APIs

Payment processing and ledger platform deployable on premise or in your own cloud

From
On request
Rated
-
Full reviewWebsite
Thunder Client logo

Thunder Client

APIs

Lightweight REST API client built as VSCode extension

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Thunder Client has a free tier, so it costs nothing to try first.
  • Each has a real cost: Episode Six deployment on premise or in a private tenancy means the institution carries infrastructure, upgrade and PCI scope work that a hosted processor would absorb.; Thunder Client paid plans are billed annually only: Starter is $3 per user per month and capped at a maximum of 10 seats, Business is $7 per user per month with 500 monthly collection runs per user, and Enterprise is $16 per user per month for unlimited runs
  • They diverge on capability: Episode Six covers Tritium API platform, Thunder Client covers REST Client.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Episode Six and Thunder Client actually diverge.

Attributes where Episode Six and Thunder Client differ
AttributeEpisode SixThunder Client
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, API, On-premiseVSCode extension, Web
FoundedUnknown2021

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 Episode Six

  • Tritium API platform
  • Flexible deployment
  • Multi product issuing
  • Digital wallets
  • Multi currency ledger
  • Network connectivity
  • Configurable product engine
  • Institutional controls

Only in Thunder Client

  • REST Client
  • Environment variables
  • Response testing
  • VSCode
  • GitHub
  • Webhook support
  • VSCode extension support
  • Web support

What people use each for

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

Episode Six

  • A bank in a jurisdiction with data residency rules that forbid processing customer data in a shared multi tenant cloudnot Thunder Client
  • A large institution replacing a legacy card processor without moving off its own infrastructurenot Thunder Client
  • A telco or airline launching a branded wallet and card product at national scalenot Thunder Client
  • A bank running prepaid, debit and credit products that wants them on one ledger rather than three processorsnot Thunder Client

Thunder Client

  • API Developmentnot Episode Six
  • API Gatewaynot Episode Six
  • API Testingnot Episode Six
  • API Documentationnot Episode Six
  • Microservicesnot Episode Six

Where each one falls short

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

Episode Six

  • Deployment on premise or in a private tenancy means the institution carries infrastructure, upgrade and PCI scope work that a hosted processor would absorb.
  • Implementation runs to quarters and involves core banking, network certification and fraud system integration, so time to first card is far longer than with a self serve issuer processor.
  • Pricing is entirely bespoke and weighted to large programmes, which prices out fintechs and small issuers who would be better served by a hosted platform.
  • Being smaller than the incumbent processors, its network certifications and operational presence vary by region, so a global rollout can find gaps in specific markets.
  • The flexibility of six hundred APIs and a configurable product engine shifts design responsibility onto the buyer, and institutions without strong internal payments architects end up dependent on professional services.

Thunder Client

  • Paid plans are billed annually only: Starter is $3 per user per month and capped at a maximum of 10 seats, Business is $7 per user per month with 500 monthly collection runs per user, and Enterprise is $16 per user per month for unlimited runs

Pricing, plan by plan

Episode Six

On request
  • Tritium platform$undefined/year
    • Licence and implementation quoted per institution
    • Deployment model affects cost materially: on premise, private cloud or hosted
    • Processing fees typically per transaction or per active card

Thunder Client

Free
  • FreeFree
    • REST client
    • Collection management
    • Local testing
  • Pro$8/monthly
    • Cloud sync
    • Team collaboration
    • Advanced features

Which should you pick?

Choose Episode Six if

  • You need tritium api platform.
  • You work on Web, API, On-premise.
  • You also want flexible deployment.
Episode Six review

Choose Thunder Client if

  • You need rest client.
  • You want to start without paying.
  • You work on VSCode extension, Web.
  • You also want environment variables.
Thunder Client review

Questions people ask

Is Episode Six or Thunder Client better?
Neither clearly leads. Episode Six starts at On request and Thunder Client at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Episode Six or Thunder Client?
Thunder Client has a free tier; the other does not. Paid plans start at On request for Episode Six and Free for Thunder Client.
Does Episode Six or Thunder Client run on more platforms?
Episode Six runs on Web, API, On-premise. Thunder Client runs on VSCode extension, Web.
Can I use Thunder Client for free?
Yes. Thunder Client has a free tier, so you can try it without paying. Episode Six starts at On request.
What is Episode Six best used for?
Episode Six is most often used for a bank in a jurisdiction with data residency rules that forbid processing customer data in a shared multi tenant cloud, a large institution replacing a legacy card processor without moving off its own infrastructure, a telco or airline launching a branded wallet and card product at national scale, a bank running prepaid, debit and credit products that wants them on one ledger rather than three processors. Of those, a bank in a jurisdiction with data residency rules that forbid processing customer data in a shared multi tenant cloud and a large institution replacing a legacy card processor without moving off its own infrastructure are not what Thunder Client is typically brought in for.
What can Episode Six do that Thunder Client cannot?
Episode Six covers Tritium API platform, Flexible deployment, Multi product issuing, Digital wallets. Thunder Client covers REST Client, Environment variables, Response testing, VSCode.

Answered from the vendors’ own pages

Episode Six: Can Episode Six run inside our own data centre?

Yes. On premise and private cloud deployment is the main reason banks choose it over hosted only processors.

Thunder Client: How much does Thunder Client cost?

Thunder Client publishes a free plan at no cost, then Starter at $3, Business at $7 and Enterprise at $16, all priced annually.

Source
Episode Six: Is it suitable for a startup issuing its first cards?

Not really. The licence, implementation timeline and cost are aimed at banks and large institutions.

Thunder Client: Is Thunder Client free?

Yes, there is a free plan. It is used through the Thunder Client extension for VS Code, available from the marketplace, with limits applied compared with the paid tiers.

Source
Episode Six: Do we still need a card licence or sponsor?

Yes. Episode Six is a processor. Network membership, licensing or a sponsor arrangement remains your responsibility.

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