OpenAI confidentially files for initial public offering on US stock market
Anthropic, another rival, Elon Musk’s SpaceX, which owns his artificial intelligence company xAI, is also imminently [slated to go public](https://www.theguardian.com/science/2026/may/20/spacex-finances-stock-market-debut) at an expected valuation of $1.75tn.
OpenAI [closed a funding