Generative Engine Optimization (GEO) was an early attempt to adapt SEO for large language models, but it never solved volatility or persistence. The standard has now been archived at GeoStandard.org for historical reference.
AIVO (AI Visibility Optimization) has since emerged as the framework for measuring and governing brand presence in AI outputs like ChatGPT and Gemini, focusing on citation density, entity authority, and visibility decay.