Conductor's 2026 AEO/GEO Benchmarks Report puts a number on ChatGPT's dominance that most brands aren't accounting for: ChatGPT alone accounts for 87.4% of AI referral traffic across ten major industries. Google AI Overviews appear in roughly 25% of analyzed searches. AI referral traffic currently sits at 1.08% of total web visits — but it's growing at approximately 1% per month, compounding from a base that didn't exist three years ago.

The 87.4% concentration means that for most brands, a ChatGPT citation strategy isn't one part of a multi-engine play — it's the primary lever for AI-driven discovery. The report also confirms that AI visibility requires a simultaneous investment in both answer engine optimization (structured, direct-answer content) and generative engine optimization (entity authority and third-party presence). Brands treating them as optional add-ons to SEO are building on a shrinking channel while the emerging one outpaces them.

Analysis of 15,847 AI Overview results across 63 industries finds that semantic completeness correlates at r=0.87 with AI Overview inclusion — versus r=0.18 for domain authority, down from 0.54 in 2024. Multi-modal content integration correlates at r=0.92, boosting selection probability by 156%. Content scoring 8.5/10+ on semantic completeness is 4.2x more likely to be cited, with 62% of featured passages landing between 100-300 words.

"The Sanbi citation study is the one I keep coming back to this week. The top Perplexity domain in a category gets 26% share. The same domain gets 7.9% on ChatGPT. That 3x gap from a single data point tells you everything about why a single GEO strategy is a losing bet. Four engines, four source graphs, nearly zero overlap. The brands winning across all of them have four separate citation programs - not one optimized post that they hope indexes everywhere."