ChatGPT now has over 300 million people using the AI chatbot each week. OpenAI CEO Sam Altman revealed the milestone during The New York Times’ DealBook Summit on Wednesday, which comes just months after ChatGPT hit 200 million weekly users in August.

“Our product has scaled … now we have more than 300 million weekly active users,” Altman said. “We have users sending more than 1 billion messages per day to ChatGPT.”

ChatGPT has grown rapidly since its launch in 2022 as OpenAI continues to add more capabilities, such as its AI search engine that surfaces and summarizes results from across the web (though they may not always be accurate), and a new “Canvas” interface that lets users more easily adjust code written by the chatbot.

Apple is also building ChatGPT directly into Siri as part of iOS 18.2, which is now available in beta and is poised to help the chatbot reach even more users.