For the United States-region prompts, AI engines cite zendesk.com most (5.5% of 11,674 responses), ahead of reddit.com and youtube.com. Full top-15 leaderboard with counts.
AmICited runs its tracked prompts across regions and records the sources AI engines cite in each. For the United States, 11,674 AI responses (across all five engines) cited 5,643 distinct domains, led by zendesk.com in 641 responses (5.5%), followed by reddit.com and youtube.com.
Most-cited domains for the United States queries
The leaderboard is moderately concentrated: the top three domains alone account for 6% of all citations in the the United States set. A small group of trusted sources does most of the work, with a long tail of occasional references behind them — the same shape seen globally, but with a regionally-tilted cast at the top.
The leaderboard data
| Rank | Domain | Responses | % |
|---|---|---|---|
| 1 | zendesk.com | 641 | 5.5% |
| 2 | reddit.com | 527 | 4.5% |
| 3 | youtube.com | 464 | 4.0% |
| 4 | shopify.com | 419 | 3.6% |
| 5 | hubspot.com | 399 | 3.4% |
| 6 | techradar.com | 379 | 3.2% |
| 7 | livechat.com | 367 | 3.1% |
| 8 | salesforce.com | 362 | 3.1% |
| 9 | bloomreach.com | 341 | 2.9% |
| 10 | google.com | 284 | 2.4% |
| 11 | freshworks.com | 260 | 2.2% |
| 12 | liveagent.com | 238 | 2.0% |
| 13 | tapfiliate.com | 223 | 1.9% |
| 14 | intercom.com | 218 | 1.9% |
| 15 | zapier.com | 195 | 1.7% |
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What’s different about the United States
The the United States leaderboard closely tracks the global most-cited set — the same major sources dominate, with little region-specific substitution in this prompt set.
What this means for AI-search visibility
If your audience is concentrated in the United States, this is the competitive set to benchmark against — not the global leaderboard. Because the regional and global sets largely overlap here, a global visibility strategy will carry most of the way in the United States. As always, mentions and citations follow from being present in the sources these engines synthesise for the relevant queries.
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The US AI citation landscape: the world’s most competitive market
The United States is the largest and most competitive market for AI search visibility . The domains that dominate US AI citations are globally recognized brands — SaaS platforms, media companies, and major publishers. This reflects both the US’s position as the home market for most AI companies and the concentration of English-language content production in the US.
Key characteristics of the US AI citation landscape:
Global brands dominate. The top-cited domains in US AI results are the same domains that dominate global AI citations — Shopify , HubSpot , Zendesk, and similar platforms. The US market is not a distinct ecosystem; it is the center of the global AI citation landscape.
.com domains are the default. The US market shows a strong preference for .com domains, reflecting both the US’s historic association with the .com TLD and the global nature of the domains that dominate AI citations.
English-language content is dominant. The US AI citation data is drawn from English-language prompts, and the cited domains are overwhelmingly English-language sites.
What this means for US-focused AI visibility
If your target market is the United States, the bar for AI visibility is higher than anywhere else. The domains you are competing against are the world’s most established, most authoritative, and most content-rich. To earn US AI citations:
Compete on content depth and quality. The top-cited domains in the US produce comprehensive, regularly updated content. Thin content will not compete.
Build domain authority. The US market rewards domains with strong link profiles, established reputations, and broad topical authority. Traditional SEO investment is a prerequisite for AI visibility.
Target English-language queries. The US AI citation data is drawn from English-language prompts. Ensure your content is optimized for English-language queries.
Practical recommendations
Audit your US AI visibility. Use AmICited to track which AI engines cite your brand for US-focused queries. Identify gaps relative to competitors.
Invest in content at scale. The US market rewards depth and breadth. A single great article is not enough — you need comprehensive coverage of your topic area.
Monitor US-specific competitors. The competitors that matter for AI visibility in the US may be different from your competitors in other markets.
Methodology
Counts cover AI responses tagged to the US region across AmICited’s 1,905 tracked prompts (June 24, 2026 – July 23, 2026, 2026), all five engines combined, rolled up to the registrable domain (so all zendesk.com hosts count together). Region tagging reflects where each prompt was run. Regional prompt volumes vary — the United States has 11,674 responses here — so treat exact ranks in smaller regions as indicative rather than definitive. No external links appear in this report.
