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APIs · head to head

Griffin vs Svix

Griffin logo

Griffin

APIs

UK banking-as-a-service from a company that holds its own full banking licence

From
£100/month
Rated
-
Full reviewWebsite
Svix logo

Svix

APIs

Outbound webhook sending as a service, with retries, signing and a customer-facing portal

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Svix has a free tier, so it costs nothing to try first.
  • Each has a real cost: Griffin platform banking carries a one-off onboarding fee from 15,000 pounds and a 3,500 pound monthly minimum, which prices out early-stage companies entirely.; Svix the Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • They diverge on capability: Griffin covers Bank accounts by API, Svix covers Automatic retries.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Griffin and Svix actually diverge.

Attributes where Griffin and Svix differ
AttributeGriffinSvix
Starting price£100/monthFree
Pricing modelPer month with usage drawdownPer month by message count
Free tierNoYes
PlatformsWeb, REST APIWeb, Cloud, Docker

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 Griffin

  • Bank accounts by API
  • UK payment rails
  • Integrated ledger
  • Automated onboarding
  • Debit cards
  • Interest on balances

Only in Svix

  • Automatic retries
  • Payload signing
  • Consumer portal
  • Event types and filtering
  • Delivery logs and replay
  • Rate limiting
  • Static source IPs
  • Language SDKs

What people use each for

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

Griffin

  • A wealth platform that must hold client money in a licensed bank rather than an EMI safeguarding accountnot Svix
  • A lender wanting UK accounts and payment rails without becoming a bank itselfnot Svix
  • A fintech burned by sponsor bank instability that wants the deposit holder and the API provider to be the same entitynot Svix
  • A platform needing sub-account ledgering for pooled client funds with a clean audit trailnot Svix

Svix

  • A SaaS company adding webhooks to its API that does not want to build retry, signing and a customer debugging UI from scratchnot Griffin
  • A payments or fintech product whose customers need signature verification libraries in several languages they did not writenot Griffin
  • An engineering team drowning in support tickets from customers whose endpoints silently failed and who need self-service delivery logsnot Griffin
  • A platform with a small number of very slow customer endpoints that must not delay deliveries to everyone elsenot Griffin

Where each one falls short

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

Griffin

  • Platform banking carries a one-off onboarding fee from 15,000 pounds and a 3,500 pound monthly minimum, which prices out early-stage companies entirely.
  • It is UK-only, so a business with European or US operations needs a second banking provider and a second integration for those entities.
  • It is a young bank with a small balance sheet relative to incumbents, and enterprise counterparties still ask hard questions about concentration risk.
  • Holding a banking licence means Griffin applies bank-grade due diligence to its own clients, so onboarding is slower and more selective than an EMI-based provider.
  • Feature breadth is narrower than long-established providers, particularly in card programme management and in payment types beyond core UK rails.

Svix

  • The Professional tier at 490 US dollars a month includes the same 50,000 messages as the free tier, so the upgrade buys SLA, throughput and retention rather than volume, which is a jarring step for a growing product.
  • Only attempted messages count toward usage, but a customer with many subscribed endpoints multiplies a single event into many billable messages, and forecasting that fan-out before launch is difficult.
  • The open source server is MIT licensed but trails the hosted product in features, so self-hosting is a fallback position rather than a genuinely equivalent option.
  • Routing outbound customer traffic through a third party puts a vendor in the delivery path for events your customers may treat as contractual, which some security reviews will not accept.
  • Payload retention is 30 days on the free tier and 90 on Professional, so anyone needing longer delivery history for audit must pay for Enterprise or log independently.

Pricing, plan by plan

Griffin

£100/month
  • Business Banking$100/month
    • From 100 pounds per month
    • Interest or commission from around 1.75 percent AER variable
    • Operational accounts and UK payment rails
  • Platform Banking$3500/month
    • One-off onboarding fee from 15,000 pounds
    • Minimum monthly spend of 3,500 pounds, drawn down by usage
    • Higher committed tiers at 5,000 and 10,000 pounds with discounts
  • Enterprise$undefined/month
    • Custom pricing
    • Bespoke account structures and volumes
    • Negotiated interest or commission share

Svix

Free
  • FreeFree
    • 50,000 messages a month included
    • Overage at $0.0001 per message
    • 99.9% uptime SLA
  • Professional$490/month
    • 50,000 messages included, same as free
    • 99.99% uptime SLA
    • 800 messages per second
  • Enterprise$undefined/year
    • Custom volume and rate limits
    • 99.999% uptime SLA
    • Custom retention

Which should you pick?

Choose Griffin if

  • You need bank accounts by api.
  • You work on Web, REST API.
  • You also want uk payment rails.
Griffin review

Choose Svix if

  • You need automatic retries.
  • You want to start without paying.
  • You work on Web, Cloud, Docker.
  • You also want payload signing.
Svix review

Questions people ask

Is Griffin or Svix better?
Neither clearly leads. Griffin starts at £100/month and Svix at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Griffin or Svix?
Svix has a free tier; the other does not. Paid plans start at £100/month for Griffin and Free for Svix.
Does Griffin or Svix run on more platforms?
Griffin runs on Web, REST API. Svix runs on Web, Cloud, Docker.
Can I use Svix for free?
Yes. Svix has a free tier, so you can try it without paying. Griffin starts at £100/month.
What is Griffin best used for?
Griffin is most often used for a wealth platform that must hold client money in a licensed bank rather than an emi safeguarding account, a lender wanting uk accounts and payment rails without becoming a bank itself, a fintech burned by sponsor bank instability that wants the deposit holder and the api provider to be the same entity, a platform needing sub-account ledgering for pooled client funds with a clean audit trail. Of those, a wealth platform that must hold client money in a licensed bank rather than an emi safeguarding account and a lender wanting uk accounts and payment rails without becoming a bank itself are not what Svix is typically brought in for.
What can Griffin do that Svix cannot?
Griffin covers Bank accounts by API, UK payment rails, Integrated ledger, Automated onboarding. Svix covers Automatic retries, Payload signing, Consumer portal, Event types and filtering.

Answered from the vendors’ own pages

Griffin: Is Griffin actually a bank?

Yes. It received a UK banking licence with restrictions in March 2023 and a full licence in March 2024 after exiting mobilisation.

Svix: How much does Svix cost?

Free up to 50,000 messages a month; Professional starts at 490 US dollars a month with the same included volume but better SLA and throughput.

Griffin: What does it cost?

Business banking from 100 pounds a month; platform banking from a 15,000 pound onboarding fee plus a 3,500 pound monthly minimum drawn down by usage.

Svix: Can I self-host it?

Yes, there is an MIT licensed server, but it lags the hosted service in features and has no SLA.

Griffin: Does it cover Europe?

No. Griffin is a UK bank serving UK accounts and UK payment rails.

Svix: What counts as a message?

Attempted or transformed deliveries. Retries and messages filtered out because no endpoint subscribed are not charged.

Svix: Does it handle inbound webhooks?

Its focus is outbound sending on behalf of API providers, not receiving webhooks from third parties.

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