Primary source · 2026-05-18
Which AEO agencies do AI engines actually recommend?
We asked ChatGPT, Claude, Gemini, and Perplexity the same question, "What are the best answer engine optimization agencies for small businesses in 2026?", with live web search on. Four engines returned four largely different lists. No agency was named by all four. The engines pulled their answers almost entirely from third-party "best AEO agency" listicles, not from agencies' own marketing. Ranking your own site is necessary; being inside the lists the engines read is what actually earns the citation.
What we measured
One identical prompt, four engines, live web search enabled, run 2026-05-18: ChatGPT (gpt-5.5), Claude (opus-4-7), Gemini (3.1-pro), Perplexity (sonar). Single run, not a longitudinal study. The point is the structural pattern, which is stark enough to read from one clean pass, not a precise leaderboard.
Who each engine named
ChatGPT (gpt-5.5)
7aeo, AEO Engine, AEO Agents, NoGood, Arc Intermedia, Amsive, Jetstorm, WeRankle, Thrive Agency, The AEO Agency
Claude (opus-4-7)
Focus Digital, BlakSheep Creative, 51Blocks, NoGood, First Page Sage, RevenueZen, Avenue Z
Gemini (3.1-pro)
Focus Digital, GreenBananaSEO, Footbridge Media, 1SEO Digital, Peachtree Rose Marketing, Riverworks Marketing
Perplexity (sonar)
Digital Elevator, Zupo, Bastion, 51Blocks, BlakSheep, Quoleady, Seer Interactive, Fire&Spark, Sterling Sky, Wiideman
Overlap was thin. Only NoGood, 51Blocks, BlakSheep, Focus Digital, and First Page Sage appeared on more than one engine. A small business researching "the best AEO agency" gets a materially different answer depending on which assistant it asks.
Where the recommendations came from
The cited sources were dominated by third-party roundup listicles, nogood.io, firstpagesage.com, moosend.com, siegemedia.com, minuttia.com, yourcontentmart.co, plus agencies' own pages when a firm was already inside those lists. For a Central Florida local query ("which AI consulting firm should I hire"), ChatGPT instead cited local competitors' own service pages directly (an Orlando AEO page, an Orlando automation firm). The mechanism is consistent: AI engines recommend what independent sources already agree on, and for local intent they will cite a strong local service page.
Why we are publishing our own zero
EVOIX was named by none of the four engines, including the Central Florida query that is precisely our market. We publish that because it is the most useful finding in the study: a technically strong website is necessary but not sufficient. The engines read distributed third-party consensus. The work that moves AI citation is getting into the lists and local surfaces the engines actually pull from, which is exactly the program we run for clients and are now running for ourselves.
FAQ
Which AEO agencies do AI engines recommend most in 2026?
Across a single identical prompt run on ChatGPT, Claude, Gemini, and Perplexity with live web search on (2026-05-18), the only firms named by more than one engine were NoGood, 51Blocks, BlakSheep, Focus Digital, and First Page Sage. No single agency was named by all four. The recommendation set diverged sharply by engine.
Where do AI engines get their AEO agency recommendations?
Almost entirely from third-party 'best AEO agency' listicles (nogood.io, firstpagesage.com, moosend.com, siegemedia.com, minuttia.com) and, for location-specific queries, from agencies' own local service pages. The engines rarely surfaced a firm that was not already inside one of those lists or ranking with a local page.
Does ranking on Google guarantee an AI engine will cite you?
No. In this audit, citation tracked third-party list inclusion and topical local pages far more than raw Google position. A firm absent from the listicles was effectively invisible in the generative answer even when it had a strong site.
How did EVOIX itself score in this audit?
Zero. EVOIX was not named by any of the four engines for the agency query, nor for a Central Florida local-business query where Orlando competitors were cited from their own service pages. We publish this because the honest baseline is the point: site quality is necessary but not sufficient. Distributed third-party presence is what the engines actually read.
Cite this study as: EVOIX (2026). AI Agent Citation Audit: AEO Agency Recommendations Across 4 Engines. https://evoix.io/research/ai-agent-citation-audit. Published under CC BY 4.0. Methodology behind the scoring lives on the EVOIX AEO Score methodology page; the service that acts on it is answer engine optimization.