Emerging category
GEO — Generative Engine
Optimisation Explained
Search is being rewritten. Google AI Overviews, Perplexity, and ChatGPT Search don't return a list of links — they generate a synthesised answer, pulling from sources they deem most authoritative. Generative Engine Optimisation (GEO) is the emerging discipline of making your content the source that gets cited.
Measure your GEO performance freeDefinition
What is Generative Engine Optimisation?
GEO is a term coined by researchers at Princeton, Georgia Tech, IIT Delhi, and Allen AI in 2023, defining the challenge of appearing in AI-generated search results. Unlike traditional SEO — where success means a top-10 ranking — GEO success means being cited as a source in an AI-synthesised answer.
Traditional SEO
- Optimise for a list of blue links
- Success = position 1–3 on SERP
- User clicks through to your site
- Traffic measured in sessions and pageviews
- Algorithm: primarily link-based ranking
- Content format: long-form keyword-stuffed pages
Generative Engine Optimisation
- Optimise to be cited inside an AI answer
- Success = being the cited source in the response
- User reads your content without visiting
- Traffic measured in mention rate and citations
- Algorithm: semantic relevance + authority signals
- Content format: factual, quotable, structured
Important nuance: GEO and traditional SEO are not mutually exclusive. Google AI Overviews still pull from highly-ranked pages. Strong traditional SEO creates a foundation for GEO, but GEO requires additional signals — specifically around how machine-parseable, factually dense, and authoritatively corroborated your content is — that traditional SEO does not.
Optimisation framework
Key GEO signals
Research from the GEO paper (Aggarwal et al., 2023) tested 10 strategies across 10,000 search queries. These are the signals with the strongest impact on generative engine citation rates.
Cite authoritative sources
High impactPages that cite statistics from reputable external sources (government data, peer-reviewed research, industry reports) are cited by generative engines significantly more often than unsupported claims.
Fluency and readability
High impactGenerative engines prefer content that is grammatically precise and well-structured. Sentence-level clarity — short, direct sentences with clear subjects — makes content easier to quote accurately.
Structured answers (FAQ format)
High impactContent formatted as question-answer pairs mirrors exactly how generative engines synthesise responses. FAQ sections with concise, self-contained answers are disproportionately cited.
Technical depth
Medium-highFor specialist queries, generative engines prefer content that demonstrates genuine expertise: specific version numbers, precise specifications, named methodologies, and technical comparisons.
Unique data and statistics
Medium-highIf you publish original research, surveys, or benchmark data, generative engines will cite you as the primary source. Being the origin of a statistic is more valuable than repeating others'.
Topical authority
MediumA site with 50 interlinked pages on a specific topic will outperform a site with one page on the same topic. Generative engines learn topical authority from content breadth and internal link structure.
Measurement
Measuring GEO performance
Google Search Console doesn't show AI Overview clicks separately. Perplexity has no webmaster tools. Measuring GEO requires a purpose-built approach.
What to measure
Citation rate
How often your pages appear as cited sources in AI-generated responses to relevant queries. The primary GEO metric.
Brand mention rate
How often your brand name appears in responses, even when your page isn't cited directly. Indicates brand authority in the model's knowledge.
Position in response
Whether you appear at the top of the synthesised answer or are buried. Lead-position citations carry far more weight with readers.
Query coverage
The breadth of relevant queries for which you appear. Narrow coverage indicates topic gaps in your content strategy.
Competitive share of voice
Your citation rate and mention rate compared to direct competitors across the same query set.
Surfaceable's GEO toolkit
Prompt-based tracking
Configure the exact queries your customers search. Surfaceable runs them against ChatGPT, Claude, Gemini, and Perplexity, logging whether you appear and how.
Trend visualisation
Score history over weeks and months shows you whether your GEO efforts are working — before the impact shows up in revenue.
Content audit
Our SEO audit flags thin content, missing schema, blocked crawlers, and structural issues that reduce your GEO citation probability.
Competitor benchmarking
Add up to 10 competitors and see how your GEO performance compares across every tracked query, segmented by AI platform.
Start optimising for generative search.
Track your GEO performance across ChatGPT, Perplexity, and more.
Get started free