The one-paragraph definition
Generative Engine Optimisation (GEO) is the practice of structuring and writing content so it gets cited, quoted, or recommended by AI-powered tools - including ChatGPT, Google AI Overviews, Perplexity, Microsoft Copilot, and similar systems. Where traditional SEO aims to rank in a list of blue links, GEO aims to become the source those AI tools draw from when they generate answers.
The term was coined in academic research published in 2024 and has quickly become one of the most discussed topics in digital marketing, as AI-generated answers now appear on an estimated 38-40% of Google searches in Australia - well above the global average.
Why GEO matters right now
The shift is structural, not cyclical. AI search isn't a feature update - it represents a fundamental change in how people find information:
- Google AI Overviews already appear on a significant share of informational queries in the US and Australia, pushing organic blue links further down the page.
- ChatGPT has over 900 million weekly active users (per OpenAI, February 2026) who regularly use it to research products, services, and providers.
- Perplexity explicitly cites its sources - meaning websites that get cited get visible referral traffic.
- Peer-reviewed research (Princeton/Georgia Tech/AI2, KDD 2024) found that specific on-page changes can lift a page's AI citation rate by up to 40%.
Key insight: In traditional SEO, you compete to appear in a list. In GEO, you compete to become the trusted source that AI systems paraphrase, quote, or link to. The winners look very different from traditional "keyword-stuffed" content.
How AI search engines decide what to cite
AI large language models (LLMs) like GPT-4 and Gemini are trained on vast amounts of web content. When generating a response, they draw on both their training data and (in tools like Perplexity and AI Overviews) real-time retrieval of current web pages. Several signals influence whether your content gets cited:
1. Factual density and specificity
AI tools prefer content that makes clear, specific, verifiable claims. Vague, fluffy writing gets skipped. "GEO can increase visibility" is weak. "GEO strategies increased citations in AI Overviews by an average of 52% across 10 tested domains" is strong.
2. Authoritative structure
Content that uses headings, definitions, lists, and clear logical structure is easier for AI systems to parse and extract. Think of it as writing for a reader who wants to be able to grab a clean answer in seconds.
3. Cited sources and original research
AI tools are more likely to reference content that itself references authoritative sources - studies, data, expert quotes. Original research and proprietary data are particularly powerful because no one else can provide that source.
4. Brand mentions and entity recognition
AI models recognise "entities" - named people, companies, products, and concepts. The more your brand appears alongside relevant entities in credible contexts (PR mentions, Wikipedia, authoritative industry sites), the stronger your signal in AI retrieval systems.
5. E-E-A-T signals
The same experience, expertise, authoritativeness, and trust signals Google uses for traditional SEO also influence AI citation. Named authors with credentials, detailed about pages, and consistent brand presence across the web all contribute.
GEO vs SEO: are they different?
They share foundations but diverge in important ways. Read our full comparison ->
The short version: SEO optimises for ranking signals (links, keywords, technical factors). GEO optimises for citation signals (authority, structure, specificity, entity strength). The best strategy in 2025 is to do both - they reinforce each other significantly.
How to start with GEO today
You don't need to rebuild your entire site. Start here:
- Audit your top 10 pages for factual density. Add specific statistics, examples, and data points where they're missing.
- Add structured definitions to key concept pages - AI tools love clean, quotable definitions.
- Build citation-worthy content: original surveys, proprietary data, or synthesised research no one else has compiled.
- Strengthen your entity footprint: consistent brand mentions, author bios, Wikipedia entries if warranted, and industry directory listings.
- Implement schema markup to help AI systems understand what type of content each page contains.
Want us to run your GEO strategy?
Our platform handles GEO optimisation as part of every retainer - content structuring, entity building, and citation tracking included.