ChatGPT growth timeline
- November 30, 2022: launch as a research preview; by December 5 it had more than 1 million registered users (NBER, 2025)
- After one year (late 2023): more than 100 million weekly active users (NBER, 2025)
- After two years (late 2024): almost 350 million weekly active users (NBER, 2025)
- March 2025: 500 million people used ChatGPT every week (TechCrunch, 2025)
- End of July 2025: more than 700 million weekly users sending 18 billion messages per week (NBER, 2025)
- October 2025: 800 million weekly users (Unite.AI, 2026)
- February 2026: more than 900 million weekly users (OpenAI via ITdaily, 2026)
Traffic and engagement
- Consumer users sent 2.6 billion messages per day in June 2025, up from 451 million in June 2024 (NBER, 2025)
- chatgpt.com was the #7 website worldwide in October 2026, with an average visit of 6 minutes 31 seconds and 4.75 pages per visit (estimate) (Similarweb, 2026)
- India alone accounts for more than 100 million weekly ChatGPT users (TechCrunch, 2026)
- OpenAI's coding agent Codex had 1.6 million weekly users in February 2026, a threefold increase since the start of the year (Unite.AI, 2026)