The short answer
Fourthline and Socure are both compliance tools. They overlap on KYC and Identity verification. Neither has a clear edge on the figures we track (entry price, review ratings, integrations, frameworks, customers). Best fit: Fourthline for european banks and neobanks that need KYC, AML and re-KYC from one vendor and Socure for financial institutions automating KYC, fraud and watchlist decisions across high-volume onboarding. Shortlist on fit, then compare quotes for the same scope.
Which should you choose?
Choose Fourthline if…
- you're among european banks and neobanks that need KYC, AML and re-KYC from one vendor
- you're among neobrokers and crypto platforms onboarding across many EU countries
- you're among teams preparing for the EU AML Regulation in July 2027
- this Socure drawback matters to you: enterprise pricing is quote-based and can vary by volume and modules
Choose Socure if…
- you're among financial institutions automating KYC, fraud and watchlist decisions across high-volume onboarding
- you're among fintechs that need a self-serve identity-verification entry point with usage-based pricing
- you're among marketplaces and gaming platforms combining identity checks with fraud and age controls
- this Fourthline drawback matters to you: no public pricing, and built for enterprise volumes
At a glance
| Attribute | Fourthline | Socure |
|---|---|---|
| Starting price | Custompricing as of Nov 2026 | From $0.80/checkpricing as of Oct 2026 |
| Pricing model | Enterprise contract, volume-based | Usage-based; self-serve Launch and quote-based Enterprise |
| Free trial | No public free trial is listed; contact sales for a demo. | Socure Launch includes $1,000 in monthly credits rather than a time-limited trial. |
| Founded | 2017 | 2012 |
| Headquarters | Amsterdam, Netherlands | Incline Village, NV |
| Funding | Up to €65M tied to the Veridas merger (November 2026); earlier rounds from Finch Capital | $742M+ disclosed |
| Frameworks | EU AMLD and AMLR, GDPR, eIDAS; ISO/IEC 27001:2022, ISAE 3000 | KYC, AML and watchlist screening |
| Coverage | Locally compliant in 30+ jurisdictions; Europe-first | 195+ countries |
| Integrations | REST API, web and mobile SDKs, Postman collections | Not published |
| Customers | Revolut, N26, Trade Republic, Qonto, Rabobank, Bitpanda | 6,000+ |
| Rating | Not published | 4.5/5 on G2 (103 reviews) |
| Focus | KYC and AML for banks and fintechs | Identity verification and fraud prevention |
Figures are as published by each vendor or review site on the verification date. "Leads" marks the stronger published figure; it isn't a recommendation on its own.
Where each one leads
Neither tool has a clear edge on the figures we can compare directly (entry price, review rating, integrations, frameworks, customers, free trial).
Pricing compared
Fourthline pricing
Custom · pricing as of Nov 2026
Plan-level pricing not published.
Fourthline does not publish pricing. It licenses its platform to regulated institutions based on verification volume and the modules selected.
Free trial: No public free trial is listed; contact sales for a demo.
Socure pricing
From $0.80/check · pricing as of Oct 2026
- Launch DocV$0.80/evaluation
Document verification
- Launch DocV + Watchlist$0.90/evaluation
Document verification, watchlist screening
- Launch KYC + Fraud$1.00/evaluation
KYC, fraud prevention, watchlist screening, document-verification step-up
- Launch Prefill$1.30/evaluation
Prefill, KYC, fraud prevention, watchlist screening, document-verification step-up
- Enterprise RiskOSCustom
Usage-based
Custom orchestration, identity, fraud, compliance and workforce-risk workflows
Socure Launch requires no contract or sales call and uses usage-based pricing after its $1,000 monthly credit allowance. Published Launch rates start at $0.80 per document-verification evaluation, with bundles ranging from $0.90 to $1.30 per evaluation. Vendr reports a $17,500 annual median buyer price and an observed range of $3,625–$205,800. AWS Marketplace lists SocureGov RiskOS at $250,000 for 12 months and 125,000 transactions; this is a marketplace benchmark, not a universal minimum plan.
Free trial: Socure Launch includes $1,000 in monthly credits rather than a time-limited trial.
Key capabilities
Fourthline
- Identity verification. Document and biometric checks with liveness and NFC chip reading, covering 3,500+ document types.
- AML screening and monitoring. Sanctions, PEP and adverse media screening at onboarding and on an ongoing basis.
- Re-KYC and remediation. Refreshes customer files for existing books of clients, including periodic and event-driven reviews.
- Fraud detection. Flags synthetic identities, document tampering and other onboarding fraud signals.
- Qualified electronic signatures. QES issued through Fourthline's Swedish subsidiary, a qualified trust service provider since August 2026.
- Digital proof of address. Verifies a customer's address digitally as part of onboarding.
- Investigations and case review. CDD reporting and a case review portal for analysts working alerts and escalations.
Socure
- Identity verification. Verifies people using identity data, device signals and more than 400 trusted sources.
- Document verification. Checks identity documents across 195+ countries and supports asynchronous verification workflows.
- KYC and AML. Supports KYC, watchlist screening and AML-oriented checks for regulated onboarding.
- Fraud prevention. Combines identity, behavioral and risk signals to support automated fraud decisions.
- Workflow orchestration. Lets Enterprise customers configure decision workflows that return ACCEPT, REJECT or REVIEW outcomes.
- Age assurance. Provides age-related verification for platforms that need to establish user eligibility.
- Workforce identity. Extends identity and risk controls to business and workforce identity use cases.
Pros and cons
Fourthline
Pros
- Covers KYC, AML screening, re-KYC and fraud in one platform
- Strong roster of European fintech and bank customers
- ISO 27001 and ISAE 3000, with EU data processing
- Veridas merger adds in-house face and voice biometrics
Cons
- No public pricing, and built for enterprise volumes
- Focused on financial services, not other verticals
- Platform integration with Veridas is still in progress
- Most coverage is in Europe
Socure
Pros
- Combines identity, document, fraud, watchlist and age workflows in one decisioning platform.
- Launch provides a low-friction entry point with $1,000 in monthly credits.
- RiskOS supports REST APIs, SDKs, hosted flows and webhook-based asynchronous processing.
- Reported coverage reaches 195+ countries and more than 6,000 customers.
Cons
- Enterprise pricing is quote-based and can vary by volume and modules.
- Launch workflows are pre-built and less configurable than Enterprise orchestration.
- Some document and OTP checks require asynchronous polling or webhook handling.
- The platform is primarily designed for organizations with substantial identity and risk volumes.
How they're similar
- Both are listed in our compliance directory.
- Both list KYC and Identity verification.
- Both highlight integrations with REST API.
- Both offer identity verification.
How they differ
- Focus
- Fourthline: KYC and AML for banks and fintechs
- Socure: Identity verification and fraud prevention
- Pricing model
- Fourthline: Enterprise contract, volume-based
- Socure: Usage-based; self-serve Launch and quote-based Enterprise
- Starting price
- Fourthline: Custom
- Socure: From $0.80/check
- Founded
- Fourthline: 2017
- Socure: 2012
- Headquarters
- Fourthline: Amsterdam, Netherlands
- Socure: Incline Village, NV
- Funding
- Fourthline: Up to €65M tied to the Veridas merger (November 2026); earlier rounds from Finch Capital
- Socure: $742M+ disclosed
- Listed only for this tool
- Fourthline: AML screening, Re-KYC, Fraud detection, Qualified electronic signature, Banks, Neobanks
- Socure: AML, Document verification, Fraud prevention, Watchlist screening, Age assurance, Authentication +4 more
Frequently asked questions
Is Fourthline cheaper than Socure?
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The published prices can't be compared directly (they are quote-based, use different billing units, or aren't published), so request quotes for the same scope. Fourthline: Custom (enterprise contract, volume-based). Socure: From $0.80/check (usage-based; self-serve Launch and quote-based Enterprise). (Fourthline pricing pricing as of Nov 2026; Socure pricing pricing as of Oct 2026.) Total cost depends on plan, company size and add-ons.
Which is better for startups, Fourthline or Socure?
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Fourthline's published positioning doesn't single out startups; its first best-fit group is "European banks and neobanks that need KYC, AML and re-KYC from one vendor". Socure's published positioning doesn't single out startups; its first best-fit group is "Financial institutions automating KYC, fraud and watchlist decisions across high-volume onboarding". Neither answer replaces a quote for your headcount and scope.
Can I switch from Fourthline to Socure?
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Yes. They are separate products, so switching means setting up Socure and reconnecting your systems. Both list integrations with REST API, so those connections are available on either side. Check your Fourthline contract term and renewal date before you commit. Data migration tooling isn't covered in our sources, so ask Socure whether it can import your Fourthline data.
Does Fourthline or Socure have more integrations?
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Fourthline: REST API, web and mobile SDKs, Postman collections; Socure: not published. Vendor counts are self-reported and define "integration" differently, so check that the specific systems you use are supported.
How do Fourthline and Socure reviews compare?
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Fourthline: no rating in our data; Socure scores 4.5/5 from 103 reviews on G2. Ratings are third-party review-site data, not our own testing.
Do Fourthline and Socure offer a free trial?
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Fourthline: No public free trial is listed; contact sales for a demo. Socure: Socure Launch includes $1,000 in monthly credits rather than a time-limited trial.
Go deeper
Fourthline
Compliance
Socure
Compliance
Sources
Vendors change pricing and features often, so confirm with each vendor before buying. How we research
Fourthline
Last verified
Work at one of these companies or spot something out of date? Suggest a correction. We check every report against a public source and update the page, usually within a few days.