Share of Model Voice (SOMV)
Share of Model Voice (SOMV) measures how often, and in what context, a brand is mentioned in ChatGPT, Perplexity or Claude answers to typical industry questions — the modern equivalent of classic visibility and ranking metrics.
Classic SEO metrics such as ranking position or visibility index assume a results list a user clicks through. With generative AI answers, that list is often gone — there's just a single, summarised answer. Share of Model Voice carries the underlying idea of visibility over into this new reality: how often does a brand appear in the answers of leading AI systems when users ask typical industry questions — and in what tone, in what position, in comparison to which competitors?
SOMV is measured by regularly putting recurring customer questions to ChatGPT, Perplexity, Claude and comparable systems, and logging whether, how often, and how correctly your own business is mentioned. For businesses, this figure is increasingly becoming the real visibility metric — regardless of whether it still results in a classic website click.
Related terms
Frequently asked questions.
How do you measure success when AI answers no longer bring traffic to my site?
The classic click-through rate loses meaning once a user gets their answer directly from the AI, without ever visiting a site. The new metric can be called Share of Model Voice: how often, and in what context, is your business mentioned when someone asks ChatGPT, Perplexity or Claude a typical question from your industry — and is it described correctly and positively?
You measure this by regularly putting typical customer questions to the major AI systems yourself and logging whether and how your business appears. Success is then no longer shown by visitor numbers, but by being present and cited correctly, even when no direct click results from it.