ChatGPT is used by 400 million people a week, as confirmed by OpenAI in a Reuters report. That's a shocking number, considering the AI chatbot is only a little over two years old. It makes ChatGPT one of the most widely used digital tools on the planet,

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,

The profusion and popularity of free, open-source models has raised questions about how AI companies can actually profit from their products.