The Signalor Competitor Analysis tool reveals which brands AI engines recommend, compare, and cite alongside yours. It sources competitors from live Google autocomplete signals, the exact "vs", "alternatives to", and "compared to" phrases buyers type when researching your category. Results are ranked by co-mention frequency so you see which rivals appear most often in active purchase-decision queries. This AI competitor analysis goes beyond traditional backlink or keyword ranking tools: it maps the competitive landscape as generative engines like ChatGPT, Gemini, Perplexity, and Claude see it. Free, no sign-up required for the co-mention ranking. Upgrading adds per-engine AI citation breakdowns that show which competitors win on ChatGPT vs Gemini vs Perplexity, and the specific prompts where rivals are cited but you are not.