# AI Visibility > Free AI visibility checker at aivisibility.pro. Enter a brand and its website; the tool checks how ChatGPT, Gemini, Claude and Perplexity answer real buying questions in the brand's market, then reports an AI visibility score: whether the assistants name the brand, who they recommend instead, which sources they cite, and how ready the site is for AI crawlers. AI visibility means how often AI assistants mention or recommend a brand when people ask them for advice in its market. The tool measures it from real assistant answers, not estimates. The report covers: an overall score, visibility per assistant, share of voice against competitors, cited sources and the citation gap, a technical readiness audit (robots.txt, sitemap, llms.txt, structured data, heading structure), and prioritized recommendations. ## Pages - [AI Visibility Checker](https://aivisibility.pro/): the free checker and an explanation of AI visibility, how to measure it, and why it matters - [Terms of Service](https://aivisibility.pro/terms/) - [Privacy Policy](https://aivisibility.pro/privacy/)