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SEO vs AEO vs GEO: What's Actually Different (With Examples)
Published 2026-09-28 · Updated 2026-10-21
SEO gets your page ranked in Google Search. AEO gets your specific answer quoted in a featured snippet or voice response. GEO gets your page cited by AI systems like ChatGPT and Gemini when they generate an answer. All three check different things, but a well-built page usually passes all three at once.
What does SEO actually check?
Search engine optimization targets a classic search algorithm: can the page be indexed, does it load fast, does it have the right tags, is the content structured for crawling. The checks are mechanical and long- standing — indexability, title tag length, meta description, heading structure, HTTPS, sitemap presence, and Core Web Vitals.
What does AEO check that SEO doesn't?
Answer engine optimization targets a narrower moment: a search engine or voice assistant pulling one direct answer out of your page to display as a snippet, without the user ever clicking through. That requires content structured differently than a typical SEO-optimized page:
- A short, direct answer near the top of a section — ideally under 60 words
- Headings phrased as the actual questions people ask, not generic labels
- A real FAQ section with FAQPage schema markup
- Tables and lists, which are easier for an extraction algorithm to lift cleanly than prose paragraphs
What does GEO check that the other two don't?
Generative engine optimization targets a large language model deciding what to cite while generating a conversational answer — a different consumer than a search index or a snippet extractor. This introduces checks that don't exist in classic SEO or AEO at all:
| GEO check | What it verifies |
|---|---|
| AI crawler access | robots.txt doesn't block GPTBot, ClaudeBot, PerplexityBot, or similar |
| AI-readable content | Main content exists in the raw server-rendered HTML, not injected later by JavaScript |
| Structured citable content | JSON-LD that identifies who the site belongs to (Organization, Person, etc.) |
| Backlink authority | Whether other established sites already vouch for this one — a trust signal, not a code fix |
How do the three fit together in practice?
They're not competing checklists — a single page can be audited against all three at once, and the overlap is large. A page that's properly indexable, fast, and well-structured (SEO) is most of the way to having a citable direct answer (AEO), and if its robots.txt doesn't block AI crawlers and its content is server-rendered (GEO), it's covered on all fronts. The failure mode is usually a gap in exactly one axis — most often GEO, since AI crawler access and server-rendering are newer concerns most sites never audited for.
See how a single audit scores all three at once with HellSEO's free AI Crawler Checker, or run a full audit for the complete 18-item breakdown across all three axes.
What we measured: which change moved which score
We re-audited our own site as we fixed it, so we can show what actually moved each score. GEO went from 70 to 85 after we added sameAs and trust links to the organization data. AEO went from 93 to 100 after FAQ questions were put into real heading tags. The SEO score kept jittering by a few points between runs, which traced back to run-to-run variation in Largest Contentful Paint rather than to any content change. One site and a handful of changes is an anecdote, not a benchmark, but it shows the three scores respond to different work.
Sources
Official documentation this post relies on (links checked 2026-10-21).
Frequently Asked Questions
Do I need to choose between SEO, AEO, and GEO?
No — they overlap heavily. A well-structured page with clean headings, fast load times, and real content typically scores well on all three at once. The checks diverge mainly around AI crawler access and question-based content structure.
Which one should a small business prioritize first?
SEO fundamentals first — indexability, title tags, HTTPS, a working sitemap — since those are prerequisites for AEO and GEO too. An AI system can't cite a page Google can't even index.
Can a page score well on SEO but fail GEO?
Yes. A page can rank fine on Google while blocking every major AI crawler in robots.txt, or rendering its content entirely client-side in JavaScript that AI crawlers can't execute — both invisible to Search but fatal to GEO.
Is GEO the same as 'answer engine optimization'?
No — they're related but distinct. AEO is about content structure (direct answers, FAQ format, question headings) that gets a snippet quoted. GEO is broader: it also covers AI crawler access, server-rendering, and backlink authority signals AI systems use to decide what to trust enough to cite.
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