OpenAI says that more than 200 million people use ChatGPT each week, as first reported by Axios. OpenAI spokesperson Taya Christianson confirmed the number to The Verge, which is now double the 100 million weekly active users OpenAI reported last November.

Additionally, Christianson says that 92 percent of Fortune 500 companies are using OpenAI’s products, while API usage has doubled following the release of the company’s cheaper and smarter model GPT-4o Mini.

Since ChatGPT’s launch in late 2022, Google, Microsoft, and Meta have also launched AI chat interfaces of their own. Today, Meta CEO Mark Zuckerberg revealed that the company’s AI assistant has reached over 400 million monthly active users and 185 million weekly active users — despite not rolling out in the UK, Brazil, or EU yet.

Earlier today, the US AI Safety Institute also announced that OpenAI and Anthropic have agreed to let the government evaluate major AI models before being launched to the public. Reports are also circulating that Apple and Nvidia could be among OpenAI’s next round of investors.

Update, August 30th: Added information from Mark Zuckerberg.