SEO helps a business rank in search results; GEO helps it get named inside answers from AI tools such as ChatGPT, Gemini and Google AI Overviews. Most businesses need both, because GEO builds on the same foundation as SEO but aims at a different place on the page.
By Trux Nguyen, Founder and Director of Unitrux, with 5 years in marketing and SEO. Published 25 October 2026. Last updated 25 October 2026.
Side by side
| SEO | GEO | |
|---|---|---|
| Question it answers | Where do we rank? | Are we named? |
| Main surface | Google listings and maps | AI assistants and AI Overviews |
| Main signals | Relevance, technical health, links, reviews | Clarity, consistency, evidence, reputation |
| Main metric | Rankings, clicks, enquiries | Mentions, citations, enquiries |
| Time to results | Usually months | Usually months, and less predictable |
Where they overlap
Google states that the same foundational SEO practices apply to AI Overviews and AI Mode. A fast, crawlable, well-structured site with clear service pages helps both. The difference is in emphasis: GEO puts more weight on being easy to describe accurately in one sentence and on consistent facts across the web.
How the shift changes budgets
Ahrefs estimated that in December 2025 the top-ranking page on keywords with an AI Overview earned about 58% fewer clicks than it would have without one. The figure is modeled, but it shows why a plan that measures only rankings now misses part of the picture.
Our expert view
We advise clients not to split SEO and GEO into two competing budgets. One plan, one foundation, two measurements: where you rank and whether you are named. Read our deeper comparison of SEO, AEO, GEO and AIO.
Related reading
- What Is Generative Engine Optimization?
- SEO vs AEO vs GEO vs AIO
- GEO Services
- Perplexity vs ChatGPT
- What Is Answer Engine Optimization (AEO)? A Plain-English Definition
- AEO vs SEO
- All AI search guides
About the author
Trux Nguyen is the Founder and Director of Unitrux, with 5 years of experience in marketing and SEO. Areas of work: SEO, AEO, GEO and AIO, local SEO, content strategy, schema markup, keyword research, Google Ads and analytics. Contact: [email protected].
Frequently asked questions
Is GEO replacing SEO?
No. GEO builds on SEO; a weak SEO foundation makes GEO harder.
Should small businesses invest in GEO?
If customers ask AI tools for recommendations in your category, yes, usually as part of one combined plan.
How is GEO measured?
By tracking a consistent set of customer questions across assistants and recording whether and how the business is named.
Limits and honest expectations
Search engines and AI assistants change their answers over time and no one controls them. Results vary by industry, city and competition, and we do not guarantee a position, a mention or a number of leads. We report what is measurable, plainly.
Sources
- Google Search Central, AI features and your website: https://developers.google.com/search/docs/appearance/ai-features
- Ahrefs, "AI Overviews reduce clicks" update, 4 February 2026: https://ahrefs.com/blog/ai-overviews-reduce-clicks-update/
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