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

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 saw 400 million weekly active users as of February, OpenAI chief operating officer Brad Lightcap told CNBC. Of all users, 2 million pay for enterprise accounts, which Lightcap attributed to consumer customers suggesting ChatGPT to their companies.