SEO agency vs AEO agency: how to tell who you're actually hiring
The scoreboard. An SEO agency is accountable for rankings and organic clicks; a real AEO practice is accountable for what AI assistants say — measured by repeated prompt testing across ChatGPT, Perplexity, Gemini and Google's AI surfaces, plus mentions earned on the pages those assistants cite. Since every SEO agency now claims AEO, the reliable test is the deliverables: if the report shows positions instead of share of voice, you are buying SEO with a new label.
What is the difference between an SEO agency and an AEO agency?
The deliverables tell you which one it is:
Core report — Rankings, clicks, impressions — Share of voice across repeated prompts, per platform
Off-site motion — Backlink acquisition — Mentions on pages assistants cite — directories, lists, communities, video
Content brief — Keyword, volume, word count — Question, answer-first structure, refresh date
Technical audit — Crawlability for Googlebot — That plus AI crawlers, no-JS rendering, hallucinated-URL 404s
Cadence — Quarterly strategy, evergreen content — Monthly refresh — because citations churn ~45% between refreshes
Proof of competence — Client rankings — Their own AI visibility, shown live
Why the label went blurry overnight
AEO budgets appeared, so every SEO agency added the acronym. Sometimes it is real — the disciplines genuinely overlap, and a strong SEO shop has most of the raw skills. But the overlap conceals the differences that decide outcomes: mention-building instead of pure link-building, monthly freshness instead of evergreen pillars, per-platform answer measurement instead of rank tracking, and a technical bar (no-JavaScript readability, AI crawler access) that classic SEO audits routinely skip because Google renders JavaScript and ChatGPT's crawler does not.
Five questions that expose the difference in one call
Ask these and listen for specifics rather than reassurance.
"Which prompts will you test for us monthly, and on which platforms?" — a real practice names prompts and platforms on the spot
"Show me your own firm's AI visibility." — the cobbler's children test; it is devastating and fair
"What is the off-site mention plan?" — the answer must go beyond backlinks
"What can you not promise?" — honest answer: any specific organic placement, because citations are probabilistic
"What did our site serve GPTBot last Tuesday?" — anyone who has actually audited you knows
When your SEO agency is the right answer anyway
If they pass those questions — real prompt measurement, real mention strategy, their own visibility in order — keep them; continuity beats novelty and the disciplines feed each other. And if they fail but their SEO results are genuinely strong, the workable structure is a split mandate: they keep rankings, a specialist takes the AEO layer, and the two coordinate on content so neither undoes the other. What does not work is paying SEO prices for an AEO line item nobody measures.
Is AEO just an upsell SEO agencies invented?
The acronym gets abused, but the underlying shift is real and measured: AI assistants answer with mentions, the winning levers differ from classic ranking factors, and businesses absent from AI answers lose buyers they never see. The upsell version is real too — which is why the deliverables test matters.
Can one firm genuinely be good at both?
Yes — the foundation is shared, and the best practitioners run both scoreboards. The tell is that they report them separately: rankings are not share of voice, and a firm that conflates them is hiding one of the two.
Why does the agency's own AI visibility matter so much?
Because it is unfakeable and free to verify: ask ChatGPT and Perplexity about agencies in their specialty and see if they surface, then check whether their own site passes the technical bar they will bill you for. A firm that cannot do it for itself is practising on you.
What does VX-N answer to its own five questions?
We name the prompts and platforms in the 24-hour report; our own answer library is served prerendered to every AI crawler and you can test our visibility live; our mention plan is documented per category; we refuse to guarantee organic placements; and we can tell you what our site served GPTBot, because we log it.
Last reviewed 23 August 2026