— AI Citation Index

Who AI search actually surfaces

We sampled 150 buyer-intent queries across 30 verticals, three times each, and mapped every domain the retrieval layer returned. This is the candidate pool AI search engines draw from, broken down by who owns it. Pick your category to see the most-surfaced domains and the GEO play.

30
verticals mapped
763
distinct domains surfaced
48.6%
of domains are brand-owned (the rest are third-party)
64.2%
of surfaced URLs are roundups ("best/top X")
— What this is, honestly

This index measures the retrieval candidate pool — the ranked domains repeated web-search retrieval returns for each query — which is what AI answer engines draw from when they ground a response. It is not a log of which sources a specific assistant cited in a generated answer, so read it as a strong leading indicator, not a citation count. Every number is computed from the raw 450-sample dataset; nothing is estimated.

— The universal authorities

A handful of third-party sources show up across many unrelated categories. These are the domains worth getting onto if you want broad AI-search reach.

#DomainTypeVerticalsMean pos.
1zapier.comEditorial10/304.93
2techradar.comEditorial9/304.65
3g2.comAggregator8/304.67
4nerdwallet.comAggregator6/303.05
5cnbc.comEditorial6/304.33
6youtube.comEditorial6/304.91
7cybernews.comEditorial5/305.36
8hubspot.comBrand5/304.71
9tomsguide.comEditorial5/304.75
10uschamber.comEditorial5/305.24
11research.comAggregator5/306.56
12security.orgAggregator4/302.8

Want the full write-up, including the global brand/aggregator/editorial split and what it means for your GEO strategy? Read the AI Citation Index study.

— Browse all 30 verticalsStableSome driftVolatile— how much the top 10 changes across our repeated samples

Accounting Software

●

Most surfaced: nerdwallet.com (aggregator, 4/5)

29 domains · brand-led →

Business Bank Account

●

Most surfaced: airwallex.com (brand-owned, 4/5)

27 domains · brand-led →

Cloud Storage

●

Most surfaced: techradar.com (editorial, 3/5)

34 domains · brand-led →

Credit Card

●

Most surfaced: wallethub.com (aggregator, 4/5)

22 domains · aggregator-led →

CRM

●

Most surfaced: hubspot.com (brand-owned, 3/5)

29 domains · brand-led →

Cybersecurity

●

Most surfaced: sentinelone.com (brand-owned, 3/5)

38 domains · brand-led →

Ecommerce Platforms

●

Most surfaced: shopify.com (brand-owned, 2/5)

40 domains · aggregator-led →

Electric Cars

●

Most surfaced: edmunds.com (aggregator, 5/5)

37 domains · aggregator-led →

Email Marketing Software

●

Most surfaced: emailtooltester.com (aggregator, 4/5)

24 domains · brand-led →

Fitness App

●

Most surfaced: fortune.com (editorial, 2/5)

29 domains · editorial-led →

HR Software

●

Most surfaced: gusto.com (brand-owned, 3/5)

40 domains · aggregator-led →

Language Learning App

●

Most surfaced: testprepinsight.com (aggregator, 4/5)

28 domains · aggregator-led →

Life Insurance

●

Most surfaced: nerdwallet.com (aggregator, 4/5)

30 domains · brand-led →

Marketing Agency

●

Most surfaced: webfx.com (brand-owned, 2/5)

49 domains · brand-led →

Mattress

●

Most surfaced: naplab.com (aggregator, 5/5)

26 domains · aggregator-led →

Meal Kit Delivery

●

Most surfaced: tasteofhome.com (editorial, 3/5)

19 domains · editorial-led →

Online Course Platform

●

Most surfaced: teachable.com (brand-owned, 3/5)

37 domains · brand-led →

Password Manager

●

Most surfaced: passwordmanager.com (aggregator, 5/5)

20 domains · editorial-led →

Payroll Software

●

Most surfaced: adp.com (brand-owned, 4/5)

28 domains · brand-led →

Project Management

●

Most surfaced: project-management.com (aggregator, 3/5)

30 domains · aggregator-led →

Running Shoes

●

Most surfaced: runrepeat.com (aggregator, 4/5)

27 domains · editorial-led →

SaaS

●

No single source dominates

41 domains · brand-led →

Smart Home Security

●

Most surfaced: safehome.org (aggregator, 5/5)

32 domains · aggregator-led →

Tax Software

●

Most surfaced: cnbc.com (editorial, 4/5)

21 domains · aggregator-led →

Time Tracking Software

●

Most surfaced: apploye.com (brand-owned, 3/5)

36 domains · brand-led →

Video Conferencing

●

Most surfaced: g2.com (aggregator, 4/5)

39 domains · editorial-led →

VPN

●

Most surfaced: thebestvpn.com (aggregator, 4/5)

27 domains · aggregator-led →

Web Design Agency

●

Most surfaced: clutch.co (aggregator, 3/5)

43 domains · brand-led →

Web Hosting

●

Most surfaced: techradar.com (editorial, 3/5)

30 domains · brand-led →

Website Builder

●

Most surfaced: tooltester.com (aggregator, 3/5)

37 domains · brand-led →
— Free GEO Audit

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