Why LLM Answers Vary — and How to Extract a Signal From the Noise
The most common objection to measuring AI brand visibility is that LLM answers are non-deterministic. Ask ChatGPT the same question twice, and the second answer is slightly different. Ask it a third time, the wording shifts again. If the output is random, the objection goes, the metric must be meaningless. That objection is half right. A single LLM answer is noisy. An aggregated, structured sample of answers is a signal. The same statistical argument that settled the question for SEO ranking in the early 2000s applies here — with a method.