Guides & resources
Understanding AI visibility
How AI assistants choose what they recommend — and how to earn your place in their answers: practical guides, grounded in our public measurements.
TAM, SAM, SOM: definitions, formulas and a worked example
What TAM, SAM and SOM actually measure, the three formulas, a free calculator, and a US market sizing worked end to end — every number with its source.
The 10 best GEO tools in 2026 (AI visibility tools compared)
The 10 best GEO (Generative Engine Optimization) tools compared: which AI engines each one covers, verified entry prices, strengths, limitations, and how to choose the right one.
How to get ChatGPT to recommend your business (what actually works)
ChatGPT already recommends businesses thousands of times a day. What our measurements show about how it picks winners — and the eight levers that actually move AI recommendations, plus the tricks that don't work.
The method, applied in public
Our observatories are real, dated, freely accessible measurements: the best way to judge the method.