Share of Model
Share of Model is the AI-era share of voice: how often a brand appears in, or is recommended by, the outputs of AI models.
Updated July 2026.
Share of Model is the AI-era analog of share of voice: how often a brand appears in, or is recommended by, the outputs of large language models when users ask buying-related questions. It measures presence inside the model’s answers rather than on a search results page.
Why does it matter now?
As buyers move research into AI chatbots, the set of brands a model names becomes a demand-shaping surface. Citation share is measurable but volatile: one index put Reddit as the single most-cited domain in AI answers, at roughly 40% aggregate share (5W Index, 2026 — treat as volatile). Any share-of-model figure should be read as directional and time-stamped.
How is it influenced?
Through the same work as generative engine optimization: clear, citable, well-structured content that models can quote, plus presence on the sources those models draw from.