| Rank | Platform | Origin | Visits | Share | Distribution |
|---|
Adjust percentage shifts to project counterfactual antitrust and market consolidation scenarios.
In the baseline audit of nine point zero four billion monthly visits, ChatGPT holds fifty-eight point nine percent of AI web traffic. Antitrust concentration is measured by the Herfindahl-Hirschman Index, defined as the sum of squared market shares. Selecting a scenario preset such as DeepSeek and Grok three-x increases their modifier sliders to positive two hundred percent. The treemap subdivides dynamically as challenger visits triple, expanding their visual tile areas and diluting monopoly share.