GEO Wiki is an open, bilingual encyclopedia dedicated to Generative Engine Optimization (GEO). It provides definitions, comparisons, and up-to-date research on how content gets cited in AI-generated answers from engines like ChatGPT, Perplexity, and Google AI Overviews. The platform includes a wiki, learning paths, playbooks, and a live pulse feed that refreshes every two hours, ensuring you stay informed on the latest developments in AI search.