How a Marketer Would Actually Build Their Own AI Visibility Tracker (And Why It's Harder Than It Sounds)

The tools to monitor your brand across ChatGPT, Perplexity, and Gemini are still catching up to the problem. So what would it actually take to build your own? From prompt libraries and API access to parsing logic and cost estimates, here's an honest technical blueprint for marketers who want to understand how AI visibility tracking works under the hood — and what makes it harder than it looks.