When someone asks ChatGPT, Perplexity, Gemini, or Google’s AI Overview which product to choose, the engine composes one answer, cites a handful of sources, and usually recommends by name. There is no page two. If a rival owns that answer, you lose the deal before you ever knew the question was asked.
Most teams answer this with a tool that prints a single “AI visibility score” — one number, no error bars, no evidence. But answer engines are non-deterministic: ask the same question twice and the answer changes. A score without a range is a coin flip wearing a suit.
LLM Tracker was built on the opposite premise: measure like it matters. Repeat every prompt, publish every score with its plausible range, verify every citation against the live page, and keep a receipt for every claim.