About
Visibility Index shows marketers who ChatGPT recommends in their category and who pays to appear next to the answer. We collect the data ourselves every week and publish it free.
Checked Sept 23, 2026
People now ask ChatGPT what to buy. The brands it names get the customer. The brands it skips never hear about the lost sale. And since February 2026, some brands pay to sit right under the answer.
Most tools that measure this are dashboards sold to one brand at a time. We think the basic facts should be public: who gets named, which websites ChatGPT trusts, what the ads cost and who can buy them.
What we publish
- The Index: who ChatGPT names and cites, by category, refreshed weekly.
- ChatGPT Ads: every fact about the ad platform, sourced and dated.
- Free tools: eligibility, ad preview and AI crawler checks.
- Directory: tools and agencies, with prices we checked.
- Lab: experiments on what makes AI assistants cite a page.
Corrections
If a fact here is wrong or out of date, tell us and we will fix it and note the change on the page.