Generative Engine Optimization (GEO)
The Citation Half-Life: Why 89 Percent of AI Visibility Wins Are Gone Within a Month
Only 10.6 percent of URLs cited by AI engines persist across 28 days. Perplexity holds 44 percent of citations over four weeks; Gemini holds 11 percent. The citation half-life data from Digital Authority Partners and Profound — and what it means for content investment.