Square vs Adyen: Payment Processors Comparison (2026)
An independent side-by-side comparison of Square and Adyen for payment processors buyers — pricing, features, integrations, and how often each is cited by major AI engines.
AI Citation Scorecard
How often each is cited by major AI engines when buyers ask payment processors questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.
Square leads overall — 73% cited vs Adyen 50% across 60 probes.
ChatGPT
SquareLeads
6 / 6 probes
100%
ExcellentAdyen
4 / 6 probes
67%
ExcellentPerplexity
SquareLeads
4 / 6 probes
67%
ExcellentAdyen
3 / 6 probes
50%
ExcellentGemini
SquareLeads
3 / 6 probes
50%
ExcellentAdyen
1 / 6 probes
17%
AverageClaude
SquareLeads
6 / 6 probes
100%
ExcellentAdyen
4 / 6 probes
67%
ExcellentCopilot
Square
3 / 6 probes
50%
ExcellentAdyen
3 / 6 probes
50%
ExcellentScale:NoneLowFairStrongExcellent
Probes run hourly; each (engine × query) combo retests every ~3 days.
Pricing
Key Features
Square
- ✓POS app for any payment
- ✓Build an online ordering profile
- ✓Track inventory and sales
- ✓Send estimates, contracts, and invoices
- ✓Schedule appointments
- ✓Access funds instantly
- ✓Create custom rewards program
- ✓Send unlimited email marketing campaigns
Adyen
- ✓No setup fee or monthly fees
- ✓One integration for all payment methods
- ✓Flexible payouts in multiple currencies
- ✓Transparency in pricing with Interchange++
When to choose Square
Choose Square if your team prioritizes its strengths over Adyen's. Full guidance populates as Square's feature data is indexed.
When to choose Adyen
Choose Adyen if your team prioritizes its strengths over Square's. Full guidance populates as Adyen's feature data is indexed.