What we measure across ChatGPT, Perplexity, Gemini, Claude and DeepSeek, including the limits of each number.
We asked Perplexity, Gemini and DeepSeek the buying questions for 79 established brands. Well-known agencies were named in a quarter of the answers about their own category.
AI assistants name brands they can describe, not brands that rank. What that means for an online store, how to check where you stand, and the fixes in order of effort.
AI engines swap the model behind a name, answer the same question differently, and search a changing web. Three things we measured, and how to read a weekly score without being fooled by them.