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APIs · head to head

Solaris vs Treblle

Solaris logo

Solaris

APIs

German banking as a service with a full banking licence and a live regulatory problem

From
On request
Rated
-
Full reviewWebsite
Treblle logo

Treblle

APIs

API observability, security, and governance platform

From
$233/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Solaris baFin appointed a special representative in 2022 and extended the mandate in July 2024, so a partner is joining a bank under active supervisory monitoring, with slower approvals and heavier compliance demands as a direct consequence.; Treblle no free tier is offered; the entry-level Core plan starts at $233/month billed yearly.
  • They diverge on capability: Solaris covers German banking licence, Treblle covers API discovery.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Solaris and Treblle actually diverge.

Attributes where Solaris and Treblle differ
AttributeSolarisTreblle
Starting priceOn request$233/month
Pricing modelquotesubscription

Identical on both: free tier (No), platforms (Web, API), 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 Solaris

  • German banking licence
  • IBAN accounts
  • Card issuing
  • Lending as a service
  • Digital assets and custody
  • SEPA payments
  • KYC and onboarding
  • Deposit protection

Only in Treblle

  • API discovery
  • Runtime security
  • API governance
  • Compliance monitoring
  • API documentation and analytics
  • Agentic AI support

What people use each for

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

Solaris

  • A retailer or platform launching a German current account or card product without applying for its own licencenot Treblle
  • A fintech that needs deposit taking and lending, which an e-money licence cannot providenot Treblle
  • A European business needing German IBANs because customers reject foreign IBANs for salary and direct debitnot Treblle
  • A company requiring German statutory deposit protection on customer balances as a product claimnot Treblle

Treblle

  • Gaining full visibility into API traffic across multi-cloud environmentsnot Solaris
  • Detecting shadow APIs and runtime security risksnot Solaris
  • Meeting compliance audit requirements such as HIPAA or GDPRnot Solaris
  • Governing API design standards through CI/CDnot Solaris

Where each one falls short

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

Solaris

  • BaFin appointed a special representative in 2022 and extended the mandate in July 2024, so a partner is joining a bank under active supervisory monitoring, with slower approvals and heavier compliance demands as a direct consequence.
  • BaFin fined Solaris EUR 6.5 million in March 2024 for systematically late suspicious activity reports and EUR 500,000 for breaching large exposure limits between January 2022 and March 2024, which is a track record a partner inherits reputationally.
  • Solaris has previously needed BaFin approval before onboarding new corporate clients, which can turn a commercial decision to launch into a regulatory timetable outside your control.
  • The 2024 restructuring involved job cuts and the closure of parts of a business unit, so product lines a partner depends on may not have the engineering behind them that the sales process implies.
  • SBI Holdings acquired majority control in 2025, so strategic direction now sits with a Japanese financial group whose priorities for the European business may differ from the roadmap you were sold.

Treblle

  • No free tier is offered; the entry-level Core plan starts at $233/month billed yearly.
  • Growth and Enterprise pricing is custom and not published, requiring a sales conversation to budget.
  • Core plan is limited to 1 workspace and only 30 days of data retention.
  • SSO and on-prem/BYO cloud deployment are reserved for the top Enterprise tier.

Pricing, plan by plan

Solaris

On request
  • Solaris banking as a service$undefined/year
    • Quoted per partner, typically setup fee plus monthly platform fee
    • Per account, per card and per transaction charges on top
    • Interchange sharing arrangements negotiated per programme

Treblle

$233/month
  • Core$233/month
    • Billed yearly
    • 5 APIs
    • 500 requests/min
  • Growth$undefined/month
    • Custom APIs and request limits
    • 50M requests/month baseline
    • API security
  • Enterprise$undefined/month
    • Unlimited workspaces, APIs, and requests/min
    • API governance and compliance
    • SSO

Which should you pick?

Choose Solaris if

  • You need german banking licence.
  • You work on Web, API.
  • You also want iban accounts.
Solaris review

Choose Treblle if

  • You need api discovery.
  • You work on web, api.
  • You also want runtime security.
Treblle review

Questions people ask

Is Solaris or Treblle better?
Neither clearly leads. Solaris starts at On request and Treblle at $233/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Solaris or Treblle?
Solaris starts at On request and Treblle at $233/month.
Does Solaris or Treblle run on more platforms?
Solaris runs on Web, API. Treblle runs on web, api.
What is Solaris best used for?
Solaris is most often used for a retailer or platform launching a german current account or card product without applying for its own licence, a fintech that needs deposit taking and lending, which an e-money licence cannot provide, a european business needing german ibans because customers reject foreign ibans for salary and direct debit, a company requiring german statutory deposit protection on customer balances as a product claim. Of those, a retailer or platform launching a german current account or card product without applying for its own licence and a fintech that needs deposit taking and lending, which an e-money licence cannot provide are not what Treblle is typically brought in for.
What can Solaris do that Treblle cannot?
Solaris covers German banking licence, IBAN accounts, Card issuing, Lending as a service. Treblle covers API discovery, Runtime security, API governance, Compliance monitoring.

Answered from the vendors’ own pages

Solaris: Does Solaris have a real banking licence?

Yes. Solaris SE is a German credit institution, which is why it can offer deposits and lending, unlike e-money based competitors.

Treblle: What does Treblle cost?

Treblle's Core plan costs $233/month billed yearly and covers 5 APIs and 5M requests/month; Growth and Enterprise plans use custom pricing for larger request volumes and advanced features.

Source
Solaris: Is the BaFin action still live?

The special representative appointed in 2022 had the mandate extended in July 2024, and fines were issued in March 2024. Treat supervisory oversight as an active condition in your diligence.

Treblle: Is there a free plan?

Treblle does not offer a free tier; it instead offers a no-credit-card demo rather than free ongoing access.

Source
Solaris: Who owns Solaris now?

SBI Holdings of Japan agreed in December 2024 and January 2025 to take a majority stake of over seventy per cent for around EUR 100 million.

Treblle: How is usage metered?

Plans are metered by number of APIs monitored and requests per minute/month, with the Core plan capped at 500 requests/min and 5M requests/month.

Source
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