GEO Wiki

How to determine whether search, AI and other web crawlers can actually reach a website's content.

How user-agent rules, web application firewalls, bot management, challenges and other technical signals affect automated access.

Official global user numbers, growth, usage patterns and a transparent U.S. estimate for ChatGPT usage, clearly separating measured figures from extrapolations.

Reach, rollout, share of affected searches (search exposure), click behavior and an in-house SERP measurement for Google AI Overviews, worldwide and in the United States, with reach and exposure kept strictly separate.

Reach, query growth, country and language rollout, and the U.S. usage patterns of Google AI Mode, worldwide and for the U.S., kept strictly separate from AI Overviews.

Reach, growth, usage and model status of the Google Gemini app, worldwide and for the U.S., kept strictly separate from Gemini models/API and Gemini in Search.

Reach (as far as official) and observed usage of Claude via the Anthropic Economic Index, worldwide and for the U.S., with a clean denominator and three separated levels of claim.