The discipline has four names and no referee. We pulled search demand for each to see which one buyers, marketers and agencies actually use — in the US and worldwide.
If you sell services or software in this space, the name you put in your title tag, your pricing page and your job ads decides which searches you can appear for. If you are a buyer, it decides what you type. Most articles pick a name and argue for it. We measured instead.
Each family below adds up the same shape of query so they compare fairly: the definitional term, the “… SEO” variant, the comparison with SEO, the tools query and the agency query where they exist. We left out “what is geo” and “geo tools” because “geo” also means geography and the searches can’t be separated.
| Family | US / month | Worldwide / month | US share |
|---|---|---|---|
| GEO (generative engine optimization) | 17,100 | 62,900 | 27% |
| AEO (answer engine optimization) | 14,400 | 32,300 | 45% |
| AI search / AI visibility | 13,400 | 25,100 | 53% |
| LLM SEO / LLMO | 6,300 | 23,900 | 26% |
Terms in each family: GEO: generative engine optimization, geo seo, geo vs seo, generative engine optimization tools, geo agency; AEO: answer engine optimization, aeo seo, aeo vs seo, answer engine optimization tools, aeo agency; LLM SEO / LLMO: llm seo, llm optimization, llmo, llm visibility; AI search / AI visibility: ai search optimization, ai visibility, ai search visibility, ai brand visibility.
| Term | US / month | Worldwide / month | US share | KD |
|---|---|---|---|---|
generative engine optimization | 7,800 | 27,000 | 29% | 65 |
answer engine optimization | 7,000 | 15,000 | 47% | 5 |
ai seo | 7,800 | 26,000 | 30% | 46 |
ai search optimization | 4,900 | 8,700 | 56% | 43 |
ai visibility | 4,300 | 9,600 | 45% | 49 |
geo seo | 2,900 | 16,000 | 18% | 45 |
llm optimization | 2,200 | 6,200 | 35% | 26 |
llm visibility | 1,700 | 2,900 | 59% | 36 |
llm seo | 1,600 | 5,400 | 30% | 20 |
aeo seo | 1,400 | 5,600 | 25% | 34 |
chatgpt seo | 1,000 | 4,200 | 24% | 11 |
llmo | 800 | 9,400 | 9% | 22 |
“AI SEO” is the second-biggest single term at 26,000 worldwide searches, just behind “generative engine optimization” (27,000), but Ahrefs groups it under the parent topic “AI for SEO”. Many of those people want to use AI tools to do SEO, not to appear in AI answers, so we kept it out of the family totals.
Search volumes are Ahrefs Keywords Explorer estimates of average monthly searches, pulled on October 25, 2026 through our SiteWide connector. They are modelled estimates, not Google’s own counts, and they are rounded by Ahrefs. KD is Ahrefs’ keyword difficulty (0–100). CPC is Ahrefs’ estimate of what advertisers pay per click in the US. Worldwide volume is Ahrefs’ global figure across all countries it tracks. Search demand tells you what people type, not how large the market is or which approach works. For definitions of each term, see our AI search glossary and what GEO is.
You are welcome to quote and chart these figures with a link back. Suggested citation: Mentioned, “GEO, AEO or LLM SEO? What 2026 Search Data Says the Field Is Called,” October 25, 2026, https://mentioned.at/learn/geo-vs-aeo-search-demand. Data and text are published under CC BY 4.0.