AIO Terminology: AEO, GEO and LLMO explained
AIO (AI Optimization) is the umbrella covering all AI surfaces. Inside it sit three distinct disciplines with different goals. Here's how to tell them apart — and the one metric that ties them all together.
The landscape
AIO is the umbrella over every AI surface
AIO (AI Optimization) covers optimization across ChatGPT, Gemini, AI Overviews and every other AI surface — AEO, GEO and LLMO are the three disciplines inside it. (Some articles use "AIO" narrowly as "AI Overview Optimization"; we use it as the umbrella term.) SEO remains the foundation beneath them all.
Definitions
Five terms, clearly defined
| Term | Full name | Goal (what "winning" means) | Main surfaces | Origin |
|---|---|---|---|---|
| SEO | Search Engine Optimization | Rank in the list of links. "#1" = first blue link. | Google / Yahoo SERP | Classic |
| AEO | Answer Engine Optimization | Get into the direct answer, not the link list. Fastest to show results (1–3 months). | Featured snippets, voice assistants, AI Overviews block | Predates generative AI |
| GEO | Generative Engine Optimization | Become a source the generative engine cites in its synthesized answer. Not "#1" — one of the few sources the AI picks. | ChatGPT, Perplexity, Gemini | Academic paper, 2024 |
| LLMO | Large Language Model Optimization | The longest horizon: the model itself knows your brand correctly, via training data and durable web-wide signals (6–12+ months). | The LLM's own knowledge | Olaf Kopp (2023) |
| AIO / GAIO | (Generative) AI Optimization | Umbrella: optimize across all AI surfaces at once. | All AI surfaces | GAIO coined by Philipp Klöckner |
The north-star metric is AI visibility
AI visibility is the measurable outcome: how much and how your brand appears in AI answers. The core metric is share of voice in AI answers. AEO, GEO and LLMO are all methods that point to this one number. It is exactly what Suparanku measures — the Visibility axis in its five-axis analysis.
The three disciplines
Each has a distinct goal and timeline
AEO
Fastest · 1–3 moAnswer Engine Optimization
Get cited as the "answer" in AI Overviews, featured snippets and voice search. Built on structured content and schema markup.
Learn moreGEO
Mid-termGenerative Engine Optimization
Become one of the few sources ChatGPT, Perplexity and Gemini cite in their synthesized answers. Content, technical and off-site signals.
Learn moreLLMO
Longest · 6–12 mo+Large Language Model Optimization
Get the model itself to know your brand correctly — via training data and durable, consistent signals spread across the web.
Learn moreContact
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