AEO vs SEO: What Is the Difference, and Do You Need Both?

What is the difference between AEO and SEO?

SEO and AEO (answer engine optimization) compete for different results. Contently puts the split as a ranking position versus a citation inside the answer.

The mechanics differ too: in WordPress VIP's description, answer engines retrieve and summarize content on the searcher's behalf instead of reviewing and ranking it.

So does the unit you compete with. HubSpot frames SEO as judging a full page's relevance and authority, while AEO extracts a short, precise answer.

The two can split on the same query: Contently notes that a page can hold the top organic position and still go unmentioned in the AI answer above it.

To check whether that is happening on your site, read ranking on Google but invisible in ChatGPT. For the full definition of AEO, see what answer engine optimization is.

Is AEO just SEO, according to Google?

For Google's AI features, Google itself counts AEO as SEO. ChatGPT, Gemini and Copilot are a different matter: most pages they cite are ones Google does not rank for that query.

What Google says

Google's position, in its own words: "From Google Search's perspective, optimizing for generative AI search is optimizing for the search experience, and thus still SEO."

That line comes from Google Search Central's guide to optimizing for generative AI search. Google's AI features documentation sets no extra requirement and calls for no special tactic to show up in AI Overviews or AI Mode.

The eligibility bar is the ordinary one. A page can only be a supporting link in AI Overviews or AI Mode once Google has indexed it and it qualifies to appear in Search with a snippet.

On markup, Google says structured data is not required for generative AI search, and there is no special schema.org markup to add. It still recommends structured data as part of SEO for rich-result eligibility. Our schema markup guide covers which types still earn their place.

What ChatGPT, Gemini and Copilot cite

Ahrefs compared the links ChatGPT, Gemini and Copilot cite with Google's results and found little overlap.

In its study of AI search overlap, only 12% of those links appeared in Google's top 10 for the same prompt. Ahrefs found that 80% of those citations did not rank anywhere in Google for the original query.

Google's AI Overviews behave differently. Earlier Ahrefs research, reported in that study, found 76% of URLs cited in AI Overviews came from pages in the top 10.

AEO is the work aimed at ChatGPT, Gemini, Copilot and the other assistants buyers open in another tab.

Does an AI answer still send traffic to your site?

An AI answer sends less traffic than a plain results page does. When Google shows an AI summary, people click fewer links.

In a Pew Research Center analysis of real browsing, visits that showed an AI summary led to a click on a regular result 8% of the time, compared with 15% of visits without one. Pew also found clicks on a link inside the summary itself in just 1% of visits to pages that had one.

For AEO, the reader may take your brand name from the answer and never visit, so a mention or a recommendation is a result in itself.

What gets a passage cited in an AI answer?

Research on cited passages points to claims a model can check and attribute (cited sources, quotations, statistics) from a brand other sites already talk about. Keyword tactics add little.

The GEO paper by Aggarwal and colleagues reports that its methods can raise visibility in generative engine responses by up to 40%.

In the same paper, the best methods, Cite Sources, Quotation Addition and Statistics Addition, improved Position-Adjusted Word Count by 30 to 40% and Subjective Impression by 15 to 30% in relative terms.

The GEO authors found that keyword stuffing, still common in SEO, gave little to no improvement. Treat their percentages as direction: they come from a research setup, so check them against your own category.

Off your site, the signal shifts from links to mentions. In Ahrefs' analysis of brand signals, web mentions correlated with AI Overview visibility at 0.664, against 0.218 for backlinks.

WordPress VIP draws the same line for AEO in general: backlinks are less directly influential, while brand mentions, digital PR and cross-web citations matter more as trust signals for LLMs.

How do AEO and SEO compare, side by side?

AEO and SEO differ on most practical points, from how long a win lasts to who owns the work.

What carries over from SEO, and what is new?

The technical base and the quality bar carry over from SEO. The new work is writing at passage level, earning mentions on other sites and dropping SEO habits that answer engines ignore.

What carries over

• Pages machines can reach. Contently lists crawlability and authority as foundations SEO and AEO share; the indexing rule covered above applies to AI Overviews as well.
• Content worth citing. Of everything in its AI search guide, Google expects content people find unique, compelling and useful to shape a site's presence in generative AI search most over time.

What is new

• Answer-first passages. HubSpot observes that many high-performing pages use a hybrid structure, with a direct answer block at the top and SEO depth below. The patterns that get lifted are set out in content structure that gets cited by AI.
• Consistent terms. HubSpot's view is that good SEO can support some AEO outcomes but does not stand in for explicitly structured answers, schema and consistent terminology. Name your product and category the same way on every page.
• Mentions on other sites. PR, reviews, partner pages and community threads that name you become part of the job (see the research above).
• A corrected view of schema. HubSpot's guide says FAQPage and HowTo schema matter most for AEO, but the record points the other way. Google now shows FAQ rich results only for well-known, authoritative government and health sites, and has deprecated How-to rich results. Ahrefs' data does not support adding schema only to win AI citations on pages already visible.
• One strong page per question. Google warns that creating separate content for every query variation, mainly to manipulate rankings or AI responses in Google Search, violates its scaled content abuse spam policy.

Do I need both AEO and SEO?

Most B2B SaaS, e-commerce and enterprise brands need both AEO and SEO, because their buyers use both surfaces at different stages. HubSpot's position is that the two serve distinct functions in the search journey and neither can fully substitute for the other.

Split the work by question type and run it as one program:

1. Keep SEO on the searches it wins. High-intent product and brand searches still send clicks that convert. HubSpot adds that SEO should lead when buyers need comprehensive information or a comparison too long for a short answer.
2. Point AEO at research-stage questions. These are the "best X for Y" and "what should I look for" questions buyers ask assistants before they have a shortlist.
3. Start with a short list. HubSpot suggests small teams begin with their top 10 to 15 high-value questions and build a clear answer block for each.
4. Run one content program. Contently argues most teams need one content program that covers SEO, AEO and GEO requirements together, with no need for three separate strategies. That means one calendar and one brief per page.
5. Give each side its own owner and scorecard. The pages are shared. Owners are in the table above and scorecards in the next section.

How should you measure AEO and SEO?

Measure AEO and SEO on separate scorecards. SEO reports positions and clicks; AEO reports how often each engine names, cites or recommends your brand.

• SEO scorecard. WordPress VIP lists rankings, impressions, CTR, organic traffic and conversions from search.
• AEO scorecard. The same source lists share of AI answers citing the brand, their sentiment and accuracy, and the effect on branded search and direct traffic.
• Google's own AI data. Search Console's generative AI performance reports show impressions, pages, countries and devices for your site's appearances in generative AI features on Google Search and Discover. Google rolled them out to all websites worldwide as of 31 August 2026.
• One view for leadership. Gartner recommends a dual-track model that pairs established business metrics with AI-era visibility indicators.

Each month we report three AEO numbers to clients: citation share, mention rate and LLM recall frequency. An answer that recommends a brand is logged on its own line, apart from answers that merely mention the brand or list it as a source link.

Expect the AEO line to lag: in our client work, it usually takes at least 60 days before the first results can be measured. Our step-by-step guide to measuring your AI visibility sets up the prompts and the scorecard.

What should SEO and AEO teams agree on before merging or deleting pages?

SEO and AEO teams should agree that no page earning AI citations is merged, redirected or deleted until both owners have signed off. Standard SEO clean-up, such as folding thin pages into a hub, can remove the exact passage an assistant was quoting.

Consolidation can be the right call for SEO. The cost to AEO never shows in the SEO report, because the lost citation was never tracked there.

1. Check citations before the change. Run the affected pages' questions through your prompt tracker and note which URLs and passages are cited.
2. Carry cited passages over intact. Move each cited answer to the destination page under its question heading, so the claim a model lifted still exists.
3. Redirect, then re-test. After launch, run the same prompts and compare them with the earlier snapshot.
4. Write the rule down. Add a citation check to the SEO change process so nobody has to remember it.

Coordination runs the other way too: we publish answer pages on the client's own domain with guardrails so they do not hurt existing search presence.

What does an AEO before and after look like?

An AEO before and after is measured in AI visibility and citation rank, not search position. Our clearest example is FastTrackr AI, a client of OnlyAEO, an AEO and GEO agency.

FastTrackr AI started at 0.1% AI visibility, ranked #338 of 458 brands in its category. About 100 days later it was the #3 most-cited brand there and the #4 most-cited source, as our FastTrackr AI case study sets out. Results differ by brand and category.

How we tested this

We tested this article by putting its exact question to ChatGPT and Claude on 14 October 2026. Every article we write starts that way: we put the buyer's question to both engines, read in full each page they cite, and give each of their searches its own section.

ChatGPT (gpt-5) answered without searching the web. Claude (claude-sonnet-5-5) ran one search, "AEO vs SEO answer engine optimization difference 2026", and cited pages from contently.com, blog.hubspot.com and wpvip.com, plus agency and publisher blogs. Neither answer named OnlyAEO.

One engine answered from what it already knew, the other from a fresh search. A brand that wants to appear in both kinds of answer needs to be well known across the web and present on the pages that answer the question.

The test has limits: one run per engine, on one day, and answers change between runs.

More questions about AEO and SEO

Do I need to change a Search Console setting to appear in Google's AI features?

Possibly. Google's AI optimization guide says that, on top of the normal technical requirements, a site must be included in Search generative AI features in Search Console to be eligible for display there. Check that setting before you debug anything else.

Is GEO different from AEO?

In practice the two names describe the same work. GEO, short for generative engine optimization, is the term academic research uses, including the paper cited above, while AEO is the more common term in marketing teams.

Why does an AI assistant repeat outdated facts about my company?

WordPress VIP points out that AI models may rely on cached or snapshot data, so old pricing or positioning can keep appearing after you change the page. Keeping core answers current on your own site and on the sites that mention you is the part you control.

Which AI assistants does OnlyAEO work on?

We work on ChatGPT, Claude, Gemini, Perplexity, Google AI Overviews, Microsoft Copilot, Grok, DeepSeek, Meta AI (Muse) and Instinct. Our tracking platform measures a smaller set: ChatGPT, Claude, Gemini, DeepSeek and Grok.