The AI Behavior Index is the research arm of OneChat AI. This page focuses specifically on the first half of calendar year 2026 — the period from January 2026 through June 2026. Statistics are drawn from publicly available studies, primary company announcements, and contemporaneous research reports.
Because the year is still in progress, this page will be substantially updated as additional data arrives. Several statistics on this page (Q2 2026 figures, OpenAI IPO filing details, market share dynamics) are based on the most current reporting available as of June 2026 and may shift as the year unfolds. Where sources use different methodologies — for example, "monthly active users" vs "weekly active users," or differences between B2B referral share and consumer market share — we note the distinction explicitly. Data is refreshed quarterly. If you have a study to suggest or notice an error, contact us at research@aibehaviorindex.org.