OpenAI announced Monday afternoon that it has filed for an initial public offering of stock, just a week after its chief rival, Anthropic did the same.

Subscribe to read this story ad-free

Get unlimited access to ad-free articles and exclusive content.

“We recently submitted a confidential S-1,” the ChatGPT maker said in a post on X, referring to the formal name of the filing. “We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company.”

The artificial intelligence startup added that “it’s a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best.”

In March, OpenAI’s valuation soared to $852 billion after it raised a fresh $122 billion in cash to fuel its ever-expanding ambitions in AI. That cash is being used to develop advanced AI models, but also the extensive physical data center infrastructure and cloud computing capacity required to run those systems.

On June 1, OpenAI’s primary rival Anthropic also filed for a public stock offering. That startup was worth $952 billion in its most recent funding round.

Regardless when OpenAI and Anthropic decide to begin trading this year, they will be the second and third IPOs to follow SpaceX’s trillion-dollar offering, which is set for Friday. Elon Musk’s rocket company is also heavily involved in artificial intelligence, through its xAI business.