Measuring AI visibility
Combine first-party data (Google Search Console's Generative AI performance report, Bing Webmaster Tools' AI Performance report, GA4 referral traffic and server logs) with a repeatable prompt panel that records whether engines mention and cite you. Share of voice is your mentions divided by all tracked brand mentions across that panel. Treat third-party estimates as samples, not ground truth.
First-party sources
| Source | What it shows | Since |
|---|---|---|
| Search Console: Generative AI performance | Impressions from AI Overviews and AI Mode by page, country, date, device; text vs multimodal; excludes Labs | All sites Aug 31, 2026[1] |
| Search Console: Performance (Web) | AI feature clicks and impressions, blended with web results | [2] |
| Bing Webmaster Tools: AI Performance | Citations in Copilot and Bing AI summaries, cited pages, sample grounding queries | Preview Feb 10, 2026[3] |
| GA4 | Referral sessions from chatgpt.com, perplexity.ai and others | Setup guide |
| Server logs | Crawler hits by user agent (OAI-SearchBot, PerplexityBot…) | Agent list |
ChatGPT adds utm_source=chatgpt.com to links it refers,[4] so those visits are easy to spot.
Citations can still pay: on informational queries, Seer Interactive found brands cited in an AI Overview got 120% more organic clicks per impression than uncited brands (53 brands; correlational).[6] Independent study
Prompt panels and share of voice
- Write 30–100 prompts real customers would ask, grouped by topic and funnel stage (the fan-out planner helps).
- Run them on each engine on a schedule, logged out or in a clean profile, from a fixed location.
- Record: brand mentioned (Y/N), position, cited URLs, sentiment, factual errors.
- Share of voice = your mentions ÷ total mentions of all tracked brands.
Answers vary between runs, users and locations, so trend the numbers over weeks rather than reading one run. Practitioner practice
How much they vary: 600 volunteers ran 12 prompts 2,961 times in ChatGPT, Claude and Google’s AI Overviews and AI Mode for SparkToro and Gumshoe. There was less than a 1-in-100 chance of getting the same list of brands twice and about 1 in 1,000 of getting the same order; the authors conclude that how often a brand appears is a reasonable metric but its ranking position is not (January 2026; Gumshoe sells AI tracking).[7] Independent study
Be careful with tools
Google warns about third-party tools that claim to report its internal metrics.[5] Prompt-tracking tools sample outputs; they don’t see real user query volumes. Use them for direction, not as ground truth. A neutral list is on tools and resources.
Frequently asked questions
Can I see AI Overview traffic in Search Console?
Yes. Clicks and impressions are in the Performance report under Web, and since August 31, 2026 the Generative AI performance report shows AI Overview and AI Mode impressions separately.
What is AI share of voice?
The share of brand mentions in AI answers, across a fixed set of prompts, that belong to you.
Does Bing show Copilot citations?
Yes. Bing Webmaster Tools' AI Performance report (public preview since February 2026) shows citation counts and cited pages.
Should I track my position in AI answers?
Track how often you appear instead. SparkToro and Gumshoe found less than a 1-in-100 chance of an AI tool giving the same brand list twice, so a single-run position is unreliable.
See also
References
Pages accessed September 28–30, 2026 unless a date is given. See all sources and our editorial policy.
- ^ "Generative AI performance report (Search)". Search Console Help. Rolled out to all sites by August 31, 2026.
- ^ "AI features and your website". Google Search Central. Last updated December 10, 2025.
- ^ "Introducing AI Performance in Bing Webmaster Tools Public Preview". Bing Webmaster Blog. Published February 10, 2026.
- ^ "Publishers and Developers – FAQ". OpenAI Help Center.
- ^ "Optimizing your website for generative AI features on Google Search". Google Search Central. Added May 15, 2026; last updated July 10, 2026.
- ^ "AIO Impact on Google CTR: 2026 Update (McDonald, Cooley, Williams)". Seer Interactive. Published April 24, 2026; January 2025–February 2026 data. Correlational.
- ^ "NEW Research: AIs are highly inconsistent when recommending brands or products; marketers should take care when tracking AI visibility (Rand Fishkin, with Patrick O’Donnell of Gumshoe)". SparkToro. Published January 28, 2026. Not peer reviewed; Gumshoe sells AI-visibility tracking.