“Share of model” refers to how often your brand, products, or narratives are represented inside the large language models powering AI search and co-pilots. Instead of only asking “what’s our share of voice in analyst reports?”, AR leaders now need to understand how often they’re surfaced, cited or recommended in AI-generated answers. Improving the share of model means curating the evidence, references, and analyst content that these models train on and ground in, which is fast becoming a core AR responsibility.