{
 "meta": {
  "title": "ChatGPT weekly users: official statement timeline",
  "units": "millions of weekly users",
  "notes": "Only OpenAI statements (or direct reports of them). Weaker points labeled. Not a continuous series.",
  "sources": "openai.com posts and keynotes; braiain.com/methodology.html#society",
  "license": "Compilation CC BY 4.0",
  "as_of": "2026-10-20"
 },
 "columns": [
  "date",
  "weekly_users_millions",
  "provenance"
 ],
 "rows": [
  [
   "2023-11-06",
   100,
   "first-party event (DevDay)"
  ],
  [
   "2024-08-29",
   200,
   "press citing OpenAI spokesperson (weaker)"
  ],
  [
   "2024-12-04",
   300,
   "first-party event (DealBook)"
  ],
  [
   "2025-02-20",
   400,
   "press (weaker)"
  ],
  [
   "2025-03-31",
   500,
   "staff X post via press (weaker)"
  ],
  [
   "2025-10-06",
   800,
   "first-party event (DevDay)"
  ],
  [
   "2026-02-27",
   900,
   "OpenAI blog"
  ],
  [
   "2026-09-29",
   1200,
   "OpenAI blog (DevDay recap)"
  ]
 ]
}