Fans out across engines
The starting configuration checks Perplexity, ChatGPT, and Gemini, and each of the three is selectable on its own. Perplexity usually returns up to ten cited sources per answer while Gemini annotates five, so engine coverage changes both the check count and the citation corpus. Grok is sold separately, as a fixed 20 prompts a week: it reads X, but on our own 36-question run it cited X only on sentiment questions and never on a buying or fact-check one. Claude and Copilot are not measured and are not sold.