Subcategory · AI Citation Index
Payment Processing
Payment processing is a contested category with four brands trading AI attention at the top. Stripe Terminal and PayPal show up in roughly two-thirds of buyer queries across every engine; Adyen sits a step behind at 60%. The consensus pick is Adyen — it wins more head-to-head comparisons than it loses — while Stripe and Checkout.com are kingmakers, surfacing in many comparison queries even when they don't win them. Paddle is falling sharply (down 35 points in AI visibility), and Wave is rising (up 12). This is a multi-horse race with no single brand capturing majority share of AI discovery.
181 discovery queries · 236 head-to-heads · refreshed Aug 16, 2026
Discovery stage
The shortlist
Across 181 buyer-style "Payment Processing" queries
Stripe Terminal and PayPal trade visibility one-for-one: Stripe surfaces in 69% of discovery queries, PayPal in 65%, and both appear across all four engines. Adyen lands in 60% of those same prompts with the same four-engine reach. Checkout.com, Worldpay, and QuickBooks form a second tier, each showing up across every engine but in fewer than half of buyer queries. No single brand dominates the shortlist; four brands split the top share within nine points of each other.
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Signal by intent
By topic
Top 5 most-cited brands per intent cluster. Brands with zero citations in a topic are not shown.
Evaluation stage
Head-to-head
How often AI cites each brand across uniform category evaluation prompts · median 5/100
When buyers ask AI to compare options, Stripe and Adyen win more head-to-head comparisons than they lose — Stripe averages 53 across 31 matchups, Adyen 52 across 30. Checkout.com sits near the category median at 48 across 28 comparison queries, while Worldpay trails at 43. The category median is 5, so every brand in the evaluation set clears the baseline, but Stripe and Adyen hold the top slots by narrow margins.
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Each brand's score is the share of category evaluation prompts where AI cited them across all four engines — the same prompt pool for every brand. Brands above the median citation rate have stronger presence in evaluation-stage queries.
Trends
Over the last 12 months
Wave is gaining AI visibility (up 12 points in recent months), while Paddle is falling sharply (down 35). Both brands remain off the consensus shortlist but signal movement in the long tail.
Brands to know
In this category
Stripe Terminal
Developer-first payment API for online transactions
Read brand profile →PayPal
Consumer and business payments platform
Read brand profile →checkout.com
KingmakerGlobal payment gateway for digital businesses
Read brand profile →Wave
RiserAccounting and payment tools for small business
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