Digital Authority Partners tracked 1,127 unique URLs that ChatGPT, Perplexity, Gemini, Copilot, and Google AI Overviews cited in response to 30 queries. Six weeks and three collection waves later, only 119 of those URLs were still being cited. The average Citation Retention Rate across platforms was 33% — meaning two out of three citations a brand earns today will be gone within six weeks.

87% of all query-platform combinations fell below a 70% stability threshold. One in four saw complete citation turnover — zero overlap between the first and third measurement wave. Platform breakdown: Gemini was most volatile at 11% retention. AI Overviews held 27%, ChatGPT 31%, Copilot 34%. Perplexity led at 44% — the most stable, but still well below what most marketers would assume. The study also confirmed that 60% of AI-cited URLs do not rank in the top 20 organic results for the same query.

Conductor's AEO/GEO Benchmarks report analyzed 3.3 billion sessions across 13,000+ domains. AI referrals average 1.08% of total website traffic — but ChatGPT owns 87.4% of that share. The key implication: AI has replaced websites as the first discovery touchpoint for a growing share of queries even though click-through volume remains small. Citation share is the leading indicator; click traffic is the lagging one.

"The Digital Authority Partners retention data changes how we should think about GEO work entirely. We have been treating AI citations as wins — something you earn and keep. Two-thirds disappearing within six weeks means they are more like a subscription that needs constant renewal. The brands doing this right treat content freshness, community presence, and schema hygiene as ongoing maintenance, not launch tasks. They run regular citation checks against a fixed query set and treat every citation they lose as a signal worth investigating. Getting cited is not the finish line — it is the starting point."