Glossary

The AI search glossary

Plain-language definitions for the new search reality. GEO, AEO, citations, share of voice, and everything in between.

5 terms Updated June 2026
AI search Answer Engine An answer engine is a search system that returns one synthesized, sourced answer to a question instead of a ranked list of links, such as ChatGPT, Perplexity, or Google AI Overviews. Read the definition Optimization Answer Engine Optimization (AEO) Answer Engine Optimization is the practice of structuring your content and presence so AI assistants cite and recommend your brand in their answers. Read the definition Optimization Generative Engine Optimization (GEO) Generative Engine Optimization is the practice of shaping your content and online presence so generative AI models cite and recommend your brand in their answers. Read the definition Measurement LLM Visibility LLM visibility is the degree to which a brand appears, is cited, and is recommended in the answers that large language models like ChatGPT, Claude, and Gemini generate. Read the definition Measurement Share of Voice (AI Search) Share of voice in AI search is the percentage of tracked prompts where an AI model mentions your brand, measured against the competitors that appear in the same answers. Read the definition

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GEO hub What a GEO tool should do AEO hub What an AEO tool should do Roundup The best GEO tools in 2026, tested and compared

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