GEO vs SEO
GEO vs SEO: what changes when an answer replaces the results page
SEO earns a ranked position on a results page. GEO earns a place inside the answer an AI engine writes. The technical work overlaps, but what moves an answer is what independent sources say about you. Here is the difference, and where CRISP fits.
How an AI answer is built
The engine writes the answer. The sources decide who is in it.
Where SEO still matters
Search engines still send buyers to websites, and AI engines retrieve from the same web. Crawlable pages, structured data, and clear answers help both. GEO does not replace SEO; it adds the half SEO was never measured on, which is whether the answer names you.
Where GEO parts company
An AI answer is composed from sources, and the engines weight independent ones over anything a company says about itself. That makes earned media, reviews, rankings, research, and the institutions that judge your industry part of the work. It is why Third Hemisphere runs GEO as a PR discipline with the technical work built in.
Where CRISP fits
CRISP is Third Hemisphere's proprietary technology and methodology, built upon the most cutting edge global standards and research. SEO has rank trackers; GEO needs a measure of the answer itself. CRISP asks your buyers' questions across ChatGPT, Claude, Copilot, Gemini, and Perplexity, repeatedly, scores Consensus, Reputation, Influence, Source, and Presence, and places you on the Star Chart the AI Authority Index publishes on.
What CRISP measures
Five factors, read from the answers rather than from a results page.
CRISP is Third Hemisphere's proprietary technology and methodology, built upon the most cutting edge global standards and research.
- Consensus. Do the engines agree about you? Your buyers do not all use the same engine. If only some of them name you, being found comes down to which one a buyer opens.
- Reputation. Do they speak in your favour? Being named is not being chosen. This is whether the engines put you forward when a buyer is deciding.
- Influence. Do trusted third parties back what is said about you? Engines repeat what credible third parties publish. When others carry your story, the engines tell it your way.
- Source. Can AI read and trust your own site? Engines check what they say against what they can read. A thin record, a contradicted one, or a site they cannot read counts against you.
- Presence. Do they mention you when buyers don't name you? Most buyers describe a need before they know a name. If the engines do not bring you up then, nothing else can happen.
Where CRISP places a company
The Star Chart the AI Authority Index publishes on.
The Star Chart places each company on two measures. Presence, across, is the share of answers that name it; Reputation, up, is whether the engines recommend it for its benefits or caution against it. Six cells name where it stands.
- AI Famous: Named in 30 percent of answers or more, and recommended for its benefits more often than cautioned against.
- Rising Star: Named in 15 to 29 percent of answers, and recommended for its benefits more often than cautioned against when it is.
- Cult Favourite: Named in under 15 percent of answers, and recommended for its benefits in the answers that reach it.
- AI Infamous: Named in 30 percent of answers or more, and cautioned against more often than recommended.
- Bad Press: Named in 15 to 29 percent of answers, and cautioned against more often than recommended.
- Off the Guest List: Named in under 15 percent of answers, and cautioned against more often than recommended when it is.
- Off the Guest List: Rarely named, and cautioned against when it is.
- Cult Favourite: Recommended by the few answers that reach it.
- Rising Star: Named more often, and still recommended.
- AI Famous: Named by default, and recommended for its benefits.
Do you need both?
If your buyers search, you need SEO. If they also ask an AI engine before they shortlist, you need GEO, and the free AI Authority Check shows how much of your market's answer you hold today.
GEO and SEO, side by side
Same web, different reader, different result.
| SEO | GEO | |
|---|---|---|
| The result | A ranked list of links | One written answer that names a short list of brands |
| Who reads it first | A person scanning results | An engine that reads for them, then a person reading its answer |
| The unit of work | Keywords and pages | Buyer questions, and the sources behind each answer |
| What moves it | Your site's relevance, structure, and links | What independent sources say about you, and a site the engines can read |
| How it is measured | Rankings, clicks, and traffic | Whether engines name you, recommend you, and describe you accurately, and which sources they cite |
| Where they overlap | Crawlable, structured, fast pages | The same, plus consistent facts about you everywhere the engines read |
Two ways to start
- Free AI Authority Check: Your company on the Star Chart, from your market's measured answers and a live read of your site. Free, and in a market we already measure the result is on screen in about two minutes.
- AI Authority Blueprint: The AI Authority Blueprint asks every engine about you by name and gives you a plan to act on, for AUD 700. Our team produces it by hand, then walks you through it.
Frequently asked questions
Is GEO replacing SEO?
No. Search still sends buyers to websites, and the engines read the same web. GEO adds the measure SEO never had, whether an AI answer names you, and the work that moves it.
Can an SEO agency do GEO?
It can deliver the technical half: crawlable, structured, quotable pages. The half that moves the answer is what independent sources say about you, which is earned media, reviews, rankings, and institutions. That needs a newsroom as much as a crawler.
What is AEO?
Answer engine optimisation is the same discipline as GEO, named for its destination: the answer. A provider pricing GEO and AEO as separate services is selling one job twice.
How do I measure GEO?
By asking the questions your buyers ask, on the engines they use, repeatedly, and reading what comes back. CRISP does that across ChatGPT, Claude, Copilot, Gemini, and Perplexity, and the free AI Authority Check is the quickest way to see your own reading.