GEO · AEO
Clear definitions of Generative Engine Optimization, AEO, and AI brand visibility terms.
llms.txt is a plain-text file at a site's root (domain.com/llms.txt) that summarizes, in clear language with links, what the organization is and what its most important content is, so AI models can interpret it without noise.
SEO optimizes to rank links in Google Search; GEO optimizes to get AI engines like ChatGPT and Gemini to mention and recommend your brand inside the generated answer. They share fundamentals, but the goal and the metrics differ.
AI visibility is the measure of how often, in what position and with what tone a brand appears in the answers of engines like ChatGPT, Gemini and Perplexity when someone asks about its category.
AEO (Answer Engine Optimization) is the practice of optimizing a brand to appear and be recommended in the direct answers of engines like ChatGPT, Gemini, Perplexity and Google AI Overviews. In practice it is synonymous with GEO.
GEO (Generative Engine Optimization) is the practice of optimizing a brand and its content so that generative engines like ChatGPT, Gemini, Perplexity and Google AI Overviews mention and recommend it in their answers.
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