GEO vs SEO: how they differ, and why you need both
SEO earns your pages a place in search results so people click through. GEO (generative engine optimization) earns your business a mention, citation or recommendation inside the answers that ChatGPT, Gemini, Perplexity and Google’s Ai Overviews write. GEO is built on SEO’s foundations, but it leans much harder on what other sites say about you.
- SEO is judged by rankings and clicks; GEO is judged by whether Ai engines name, cite or recommend you.
- Generative engines mostly retrieve from pages that search engines have already indexed, so SEO comes first.
- GEO puts more weight on off-site consensus: reviews, brand mentions, lists and directories that describe you consistently.
- Ai crawler access, clear entity facts and quotable passages are the GEO-specific technical work.
The short version
SEO (search engine optimization) helps search engines find, understand and rank your pages. Success is a high position for the searches your buyers make, and the clicks that follow.
GEO (generative engine optimization) helps generative Ai engines retrieve your content and confidently say your name when a buyer asks for a recommendation. Success is being named, cited or recommended in the answer, often without a click at all.
If you have read our AEO vs SEO guide, GEO sits close to AEO. AEO is about being the answer to a question in any answer feature; GEO is specifically about generative engines and whether they recommend your brand. Our guide to what GEO is covers the origins and mechanics.
Side-by-side comparison
| SEO | GEO | |
|---|---|---|
| Goal | Rank in search results and earn clicks | Be named, cited or recommended in Ai answers |
| Where it shows | Blue links, local pack, shopping results | ChatGPT, Gemini, Perplexity, Claude, Copilot, Ai Overviews |
| Unit of success | A position and a click | A mention, citation or recommendation |
| Main inputs | Relevance, links, technical health | Same, plus off-site consensus, quotable passages and entity facts |
| Crawlers to allow | Googlebot, Bingbot | Also Ai search crawlers such as OAI-SearchBot and PerplexityBot |
| Measured by | Rankings, traffic, leads | Repeated buyer-question tests per engine, share of voice, cited sources |
Where GEO and SEO overlap
Most of the work is shared. Generative engines usually run a web search before they answer, and they read pages from a search index. Google sa