Four terms for four related things. They are not interchangeable. Knowing the precise relationship between them is the easiest way to understand the AI visibility category and where Kodiac fits.
The umbrella discipline. All optimisation strategies aimed at being cited, recommended, mentioned, or referenced by any generative AI system. GEO covers content engineering, entity authority, structured data, third-party source presence, and continuous measurement across multiple AI engines. It is the broadest term in current use.
Most useful when: you need a single term that covers the whole discipline.
A sub-discipline of GEO focused on the answer-extraction layer. AEO is concerned with being chosen as the cited source when an answer engine extracts a specific factual answer. Tactically it overlaps heavily with GEO but emphasises FAQPage schema, answer-first content shape, and direct extractability. HubSpot's branding has popularised the term - in practice many teams use AEO and GEO interchangeably.
Most useful when: you want to optimise specifically for answer engines (ChatGPT, Perplexity, Google AI Overviews).
The measurable outcome that GEO and AEO try to move. AI Visibility describes how often, how accurately, and how favourably a brand appears in AI-generated responses. It is the metric that boards and CMOs want reported on. GEO and AEO are the disciplines; AI Visibility is the score.
Most useful when: reporting to executives or measuring progress over time.
Coined by Kodiac. The discipline of monitoring and improving the third-party sources AI systems cite when describing a brand - Reddit, Wikipedia, G2, Hacker News, trade press, news. University of Toronto research (Chen et al., September 2025) found AI search engines cite these earned sources 74-92% of the time depending on category, vs Google's more balanced mix. Most GEO and AEO tools either ignore this layer or treat it as a footnote. Source Intelligence is the layer that produces the largest movement in AI visibility for most brands.
Most useful when: you've optimised your owned content and your AI score still isn't moving.
| Term | What it is | Scope | Used by |
|---|---|---|---|
| GEO | Discipline (umbrella) | All generative AI surfaces | Specialist vendors, technical SEO community |
| AEO | Discipline (sub-set) | Answer-extraction layer | Mainstream marketing tools, HubSpot ecosystem |
| AI Visibility | Outcome metric | How brand appears in AI responses | CMOs, boards, brand teams |
| Source Intelligence | Sub-discipline of GEO | Third-party sources AI cites | Brands serious about diagnosing root causes |
GEO and AEO are now widely-known categories with crowded vendor landscapes. Source Intelligence is where brands win or lose AI visibility in practice - and where most current tools have nothing to offer.
If your AI visibility score is low and you have already optimised your owned content, the answer is almost always Source Intelligence. The next era of AI brand discovery is not about more content on your website. It is about understanding, measuring, and influencing the third-party sources that produce the overwhelming majority of your AI representation.
A single 60-second audit shows your AI visibility score, scores your owned content for AEO/GEO, and surfaces the top 10 third-party sources shaping your brand. No credit card.
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