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APIs · head to head

Lithic vs Thunder Client

Lithic logo

Lithic

APIs

API-first card issuing platform with direct Visa, Mastercard and Amex network connections

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: Lithic pricing is entirely undisclosed, so a company cannot compare total cost against Marqeta, Galileo or Highnote without a sales conversation.; 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: Lithic covers Direct network connections, Thunder Client covers REST Client.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Lithic and Thunder Client actually diverge.

Attributes where Lithic and Thunder Client differ
AttributeLithicThunder Client
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, APIVSCode 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 Lithic

  • Direct network connections
  • Processor Client mode
  • Lithic Program Management
  • Card lifecycle APIs
  • Sandbox environment
  • Real-time authorization 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.

Lithic

  • A fintech wanting direct Visa or Mastercard network access rather than routing through a third-party processornot Thunder Client
  • A company that already holds its own issuing licence and wants API access without full programme managementnot Thunder Client
  • A neobank or expense platform wanting Lithic to manage bank and network relationships end to endnot Thunder Client
  • A product team prototyping a card programme in sandbox before committing to a launchnot Thunder Client

Thunder Client

  • API Developmentnot Lithic
  • API Gatewaynot Lithic
  • API Testingnot Lithic
  • API Documentationnot Lithic
  • Microservicesnot Lithic

Where each one falls short

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

Lithic

  • Pricing is entirely undisclosed, so a company cannot compare total cost against Marqeta, Galileo or Highnote without a sales conversation.
  • Choosing Processor Client mode still leaves the company responsible for holding its own issuing licence and managing the regulatory relationship, which is a substantial undertaking many teams underestimate.
  • As with any card infrastructure provider, an outage or network issue at Lithic becomes a direct outage for every card programme built on it, and a customer has limited visibility into root cause during an incident.
  • Building a card programme on API infrastructure requires real engineering investment; it is not a plug-and-play product for a non-technical team.
  • Switching card infrastructure providers after launch is a major undertaking involving card reissuance and programme migration, so the initial choice carries lasting lock-in.

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

Lithic

On request
  • Lithic$undefined/year
    • Volume and interchange-based pricing, not published
    • Separate Processor Client and Program Management pricing tracks
    • Custom quote required via sales

Thunder Client

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

Which should you pick?

Choose Lithic if

  • You need direct network connections.
  • You work on Web, API.
  • You also want processor client mode.
Lithic 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 Lithic or Thunder Client better?
Neither clearly leads. Lithic 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, Lithic or Thunder Client?
Thunder Client has a free tier; the other does not. Paid plans start at On request for Lithic and Free for Thunder Client.
Does Lithic or Thunder Client run on more platforms?
Lithic runs on Web, API. 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. Lithic starts at On request.
What is Lithic best used for?
Lithic is most often used for a fintech wanting direct visa or mastercard network access rather than routing through a third-party processor, a company that already holds its own issuing licence and wants api access without full programme management, a neobank or expense platform wanting lithic to manage bank and network relationships end to end, a product team prototyping a card programme in sandbox before committing to a launch. Of those, a fintech wanting direct visa or mastercard network access rather than routing through a third-party processor and a company that already holds its own issuing licence and wants api access without full programme management are not what Thunder Client is typically brought in for.
What can Lithic do that Thunder Client cannot?
Lithic covers Direct network connections, Processor Client mode, Lithic Program Management, Card lifecycle APIs. Thunder Client covers REST Client, Environment variables, Response testing, VSCode.

Answered from the vendors’ own pages

Lithic: Does Lithic publish pricing?

No, pricing is volume-based and requires a sales conversation.

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
Lithic: What is the difference between Processor Client and Program Management?

Processor Client suits companies with their own issuing licence and bank relationships; Program Management is for companies wanting Lithic to coordinate those relationships on their behalf.

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
Lithic: Which networks does it connect to?

Visa, Mastercard and American Express directly.

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