Library / Visibility / Oct 28, 2026
GEO vs SEO: What Changes and What Stays the Same
GEO and SEO share most of their foundations: crawlable pages, clear content and authority. SEO aims for a ranked link on a results page. GEO aims for a mention or a citation inside an AI-written answer. Google says optimizing for its AI features is still SEO. ChatGPT, Claude and Perplexity add their own crawlers and their own sources.
In one sentence: SEO earns you a place in the list of results; GEO earns you a place in the answer.
Generative engine optimization (GEO) is the practice of making a site and its wider footprint easy for AI engines to retrieve, trust and cite. The full definition is on what is generative engine optimization.
Is GEO replacing SEO?
No. Google’s guide states that optimizing for generative AI search “is still SEO” (Google Search Central, updated July 10, 2026). It also says you need no special schema, no AI text files and no chunked content to appear in Google’s AI features.
The link between rank and citation is weaker than it used to be, though:
- Ahrefs analyzed 863,000 keyword results and 4 million AI Overview URLs. In its March 2026 update, 38% of AI Overview citations came from top 10 pages, down from about 76% in its July 2025 study.
- Semrush found that pages cited by ChatGPT search rank in position 21 or lower for related queries almost 90% of the time (July 2025).
So SEO gets you into Google’s candidate pool. It does not decide what ChatGPT or Perplexity cite.
GEO vs SEO: the main differences
| SEO | GEO | |
|---|---|---|
| Goal | A ranked link | A mention or citation inside the answer |
| Success metric | Position, impressions, clicks | Mention rate, citation rate, share against competitors |
| Who reads your pages | Googlebot, Bingbot | Those, plus GPTBot, OAI-SearchBot, ClaudeBot, Claude-SearchBot, PerplexityBot and user-triggered fetchers |
| Query shape | Short keywords | Longer questions and follow-ups |
| Unit of content | The page | The passage: a definition, a number, a table row |
| Off-site signal | Backlinks | Brand mentions on other sites, reviews, YouTube, communities |
| Stability | Rankings move over days and weeks | Answers can change between two runs of the same prompt |
| Main tools | Search Console, rank trackers | Repeated prompt runs per engine, crawler logs, Search Console’s Generative AI performance report for Google |
Query shape is not a guess. Pew found that Google searches of 10 or more words produced an AI summary 53% of the time, against 8% for one- or two-word searches.
What stays the same?
Most of the work. Pages must be crawlable and indexable. Titles must say what the page is. Pages must load fast: Google’s Core Web Vitals targets are LCP within 2.5 seconds, INP of 200 milliseconds or less and CLS of 0.1 or less. Content must show real expertise. Internal links must connect related pages. A site that fails these checks fails GEO too.
What changes in practice?
You manage more bots. Cloudflare found that 80% of AI crawling over the 12 months to July 2025 was for training. In July 2025, Anthropic crawled about 38,000 pages for every visit it referred back. You can block training crawlers and still allow search crawlers. Not every fetcher obeys robots.txt: OpenAI says rules may not apply to ChatGPT-User because a person triggered the fetch, and Perplexity says Perplexity-User generally ignores robots.txt. See agent readiness.
You measure differently. Clicks undercount AI exposure. A buyer can read your name in an answer and never click. Track mentions and citations per engine, three runs per prompt.
You write for extraction. Each key page opens with a direct answer and a one-sentence definition. Numbers carry a date and a source. Comparisons go in tables. See how AI citations work.
You earn mentions, not only links. Engines name brands that other sites talk about. Reviews, community threads and YouTube count.
Where does AEO fit?
Answer engine optimization (AEO) is the page-level part: formatting content so an engine can lift the answer. It predates generative AI, starting with featured snippets. Full detail is on what is answer engine optimization.
What we check in the Growth Scan
| Check | Pass | Warn | Fail |
|---|---|---|---|
| Sitemap present and referenced (SEO Technical) | Listed in robots.txt and returns 200 | Exists, not listed in robots.txt | Missing or returns an error |
| Indexable key pages (SEO Technical) | Home, pricing and product pages all indexable | A secondary page set to noindex | Home or pricing set to noindex |
| Core Web Vitals field data (SEO Technical) | LCP, INP and CLS all within Google’s targets | One metric outside target | Two or more outside target |
| AI crawler rules (Agent Readiness) | Search crawlers allowed, every rule deliberate | Blanket rule that also blocks some search crawlers | Search crawlers blocked or whole site disallowed |
| Brand mentioned for category prompts (AI Visibility) | Named by 3 or 4 of 4 engines | Named by 1 or 2 | Named by none |
| Competitor share of mentions (AI Visibility) | You are among the top 3 brands named | Named, outside the top 3 | Not named |
Typical fixes: reference the sitemap in robots.txt (30 min), remove a stray noindex (30 min), unblock search crawlers (30 min), compress the hero image to bring LCP under 2.5 seconds (2 hours).
Run a free Growth Scan on your site to see where you stand.
Sources
- Optimizing for generative AI search (Google Search Central)
- Update: 38% of AI Overview Citations Pull From The Top 10 (Ahrefs)
- AI Search & SEO Traffic Case Study (Semrush)
- Google users are less likely to click on links when an AI summary appears in the results (Pew Research Center)
- The crawl-to-click gap: Cloudflare data on AI bots, training, and referrals (Cloudflare)
- Overview of OpenAI crawlers (OpenAI)
- Perplexity crawlers (Perplexity)
- Web Vitals (web.dev)
Questions
- Is SEO dead now with AI?
- No. Google says optimizing for its AI features is still SEO. Crawlable, indexable, useful pages are still the entry ticket for every engine. What has changed is the payoff. Pew found that people clicked a traditional result in 8% of visits when an AI summary appeared, against 15% without one. Rankings still matter. Clicks per ranking have fallen.
- What is the difference between GEO, AEO and SEO?
- SEO earns a ranked link on a results page. Answer engine optimization (AEO) formats a page so an engine can lift a direct answer from it. Generative engine optimization (GEO) covers the whole footprint that decides whether AI engines name and cite you: crawler rules, quotable pages and mentions on other sites. AEO is one part of GEO. Both sit on top of SEO.
- Does ranking on Google get me cited by ChatGPT?
- Not reliably. Semrush found that pages cited by ChatGPT search rank in position 21 or lower for related queries almost 90% of the time. ChatGPT uses its own crawler, OAI-SearchBot, and its own retrieval. Google rank helps more inside Google's own AI features, though Ahrefs found only 38% of AI Overview citations came from top 10 pages in early 2026.
- Should I block AI crawlers?
- Block by purpose, not by brand. Training crawlers such as GPTBot and ClaudeBot collect data for model training. Search crawlers such as OAI-SearchBot, Claude-SearchBot and PerplexityBot decide whether you can appear in answers. Many sites block training and allow search. Blocking search crawlers removes you from those engines' answers. Decide per bot and write each rule down.
- How do I measure GEO?
- Pick 10 to 25 prompts a buyer would ask about your category. Run each prompt three times in ChatGPT, Claude, Gemini and Perplexity. Record whether you are mentioned, whether you are cited with a link, and which competitors appear. Repeat monthly. Report ranges, not single results, because answers change between runs.