ChatGPT weekly active users, 2023 to 2026

Key findings

• ChatGPT's announced weekly users rose ninefold, from 100 million (6 November 2023) to 900 million (27 February 2026).
• It took almost ten months to go from 100 million to 200 million weekly users, but under six weeks to go from 400 million (20 February 2025) to 500 million (31 March 2025).
• Between the 800 million figure announced at DevDay on 6 October 2025 and February 2026, ChatGPT added a further 100 million weekly users.

The data

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Sources and method

• TechCrunch, OpenAI's ChatGPT now has 100 million weekly active users (6 Nov 2023) (Sam Altman at OpenAI DevDay)
• Simon Willison, OpenAI says ChatGPT usage has doubled since last year (citing Axios and The Verge, 29 Aug 2024) (More than 200 million weekly active users, confirmed by an OpenAI spokesperson)
• TheWrap, OpenAI's ChatGPT hits 300 million users (4 Dec 2024) (Sam Altman at the New York Times DealBook conference)
• Engadget, ChatGPT reaches 400M weekly active users (20 Feb 2025) (OpenAI COO Brad Lightcap)
• Maginative, OpenAI secures record $40 billion in funding (31 Mar 2025) (OpenAI funding announcement, 500 million weekly users)
• TechCrunch, OpenAI says ChatGPT is on track to reach 700M weekly users (4 Aug 2025) (OpenAI statement)
• TechCrunch, Sam Altman says ChatGPT has hit 800M weekly active users (6 Oct 2025) (Sam Altman at OpenAI DevDay)
• TechCrunch, ChatGPT reaches 900M weekly active users (27 Feb 2026) (OpenAI funding announcement)

One row per public announcement of a ChatGPT weekly active user milestone, dated by the day it was announced and taken from contemporaneous news reports quoting OpenAI or its executives. Figures are the headline milestones as stated (for example 'more than 800 million').

These are OpenAI's own claims and are not independently audited; most are stated as 'more than' the round number. The 700 million figure was described as 'on track to hit this week'. No separate 600 million announcement was found. A July 2026 Bloomberg report that OpenAI's models reach 'more than one billion active users' is excluded because it did not specify weekly ChatGPT users.

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