OpenAI (OPAI.PVT) on Monday said it filed confidential paperwork for an initial public offering (IPO), setting up one of the most anticipated market debuts in years. The company said it hasn't decided on timing yet,

OpenAI, the company behind ChatGPT, has confidentially filed paperwork for a stock market listing in the United States.

An OpenAI public offering would join what is expected to be a wave of blockbuster I.P.O.s, with Elon Musk’s rocket company, SpaceX, and the A.I. start-up Anthropic also preparing to go public this yea...