ChatGPT has surpassed 400 million weekly active users. "We feel very fortunate to serve 5 percent of the world every week," OpenAI COO Brad Lightcap said on X about the new audience stat. This figure is twice the weekly active user count reported by the company in August 2024,

ChatGPT has crossed 400 million weekly active users (WAU), with over 2 million business users leveraging the tool for work, according to OpenAI COO Brad Lightcap.