SoM (Share of Model)
Share of Model is an AI visibility metric that measures how often a brand is mentioned or cited by one or more LLMs as a share of total category brand mentions.
Explanation
The metric is credited to Jack Smyth and Tom Roach and is positioned as the AI-era successor to Share of Voice. It is calculated as brand mentions divided by total category mentions, multiplied by 100, using a fixed set of prompts run across ChatGPT, Gemini and Perplexity. Several vendors, including Profound, Conductor and Semrush, now automate this calculation, giving marketing teams a direct KPI for AI answer presence.
Usage context / examples
NameSilo published "What is Share of Model: A KPI for 2026," and Symphonic Digital published "Share of Model: The Essential Marketing Metric for the AI Era."
Related terms
Turkish definition
Share of Model, bir markanın kategori içindeki toplam yapay zeka yanıt anımlarına oranla ChatGPT, Gemini ve Perplexity gibi büyük dil modellerinde ne sıklıkla anıldığını ölçer.