GEO vs SEO: What's the difference and why you need both
Two systems, two strategies
SEO (Search Engine Optimisation) has been the dominant traffic strategy for 25 years. You optimise pages so Google ranks them higher in search results. GEO (Generative Engine Optimisation) is new. You optimise your brand so AI engines like ChatGPT mention you in their answers. They look similar on the surface — both involve content, authority, and technical optimisation. But the mechanics are fundamentally different.
How ranking works: links vs synthesis
Google ranks pages using a link-based algorithm. More high-quality backlinks = higher ranking. You compete for position 1, 2, or 3 on a results page. AI engines don't rank pages. They synthesise answers from thousands of sources. There's no 'position 1' — either your brand is mentioned in the generated text, or it isn't. This changes the game completely. In SEO, you can win by optimising one page really well. In GEO, you need broad presence across multiple authoritative sources.
What each system values
SEO values keywords and content length. You target a keyword, write a 2,000-word article, build backlinks, and wait. GEO values authority and structured data. AI engines don't care about keyword density. They care about whether your brand appears on Wikipedia, G2, TrustPilot, industry publications, and other sources they trust. AI engines care about freshness (updated content is preferred), structured data (Schema.org markup), comparison content (vs pages), and broad mention frequency (appearing across many sources).
The measurement challenge
SEO is easy to measure. Google Search Console shows your impressions, clicks, and rankings. Google Analytics shows your traffic. GEO is harder. AI engines don't provide analytics. You can't see how many times ChatGPT mentioned your brand yesterday. The only way to measure is to actively test — run queries across ChatGPT, Claude, Gemini, and Perplexity, and check if your brand appears. Tools like ChatCite automate this by running 10+ buyer-intent prompts across all engines and calculating a visibility score.
Why you need both
SEO still drives the majority of web traffic in 2026. Don't abandon it. But GEO is growing fast — 800 million people use ChatGPT weekly, and that number doubles every year. The smartest strategy is to optimise for both simultaneously. The good news: many GEO tactics also help SEO. Schema markup improves both. Fresh content helps both. Authority building (Wikipedia, G2, press coverage) helps both. Start with your existing SEO strategy and layer GEO-specific tactics on top: comparison content, review aggregator presence, and regular AI visibility audits.
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