OpenAI confidentially files for initial public offering on US stock market

ChatGPT maker expected to be valued at more than $850bn, one of most highly valued listings in market history

OpenAI has filed confidentially to go public on the US stock market, according to a company blogpost published on Monday. The artificial intelligence giant's debut on Wall Street is expected to be one of the most highly valued listings in market history with a valuation at more than $850bn.

We recently submitted a confidential S-1. We expect it to leak so we're just announcing it," the company's post reads. 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. But it's a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best."