AI search glossary

Definitions for every term in AI search visibility, AEO, GEO, and marketing agents — written by Lantern, the platform that measures and improves all of them.

• Answer Engine Optimization (AEO)

  The practice of optimising content so that AI engines like ChatGPT, Perplexity, and Gemini cite your brand in direct answers.

• Generative Engine Optimization (GEO)

  A discipline focused on making brand content more citable inside AI-generated search responses.

• AI Citation

  A reference to your brand, product, or content inside an AI-generated answer — the atomic unit of AI search visibility.

• Share of Voice (AI)

  The percentage of AI responses about your category that mention your brand versus competitors.

• Brand Visibility

  How widely and accurately your brand appears across AI engines, search results, and online sources.

• AI Search Visibility

  A measure of how often and accurately your brand, products, or content appear in AI-generated search answers.

• Marketing Agent

  An autonomous AI agent that executes marketing tasks — GEO, SEO, content, distribution — without manual intervention.