The AI Visibility Index is a periodic measurement of which brands AI assistants actually name and recommend, by category. It is sampled on a fixed suite of non-branded buyer questions across ChatGPT, Claude, Gemini and Perplexity, repeated for statistical confidence. Every number here has a confidence interval and a measured run behind it.
The whole index as a spreadsheet or as JSON — one row per brand per category, carrying the share, both ends of the 95% interval, the sample size, the engine list and the run id. Cite it, re-analyse it, argue with it. Attribution appreciated, permission not required.
Each edition replaces the last at the same URL, so a saved copy is a snapshot and nothing more. Leave an address and we'll tell you when a new edition lands and which way the numbers moved — the part a downloaded file can never tell you.
Want this for your own brand and category? Start with a free page check, or see whether AI crawlers can reach your site at all.