OpenAI confirmed Monday that it has submitted a draft S-1 to the Securities and Exchange Commission, working with Goldman Sachs and Morgan Stanley on a potential listing at the roughly $852 billion valuation set by its March funding round. The disclosure makes the ChatGPT maker the third major AI developer to enter the IPO pipeline in about a week, alongside Anthropic at $965 billion and the merged Space Exploration Technologies and xAI vehicle expected to begin trading Friday at around $1.8 trillion. Bloomberg pegs the combined pipeline at roughly $3.6 trillion.

The company’s framing of the announcement was unusually candid. “We recently submitted a confidential S-1. We expect it to leak so we’re just announcing it,” OpenAI said in a statement posted to its website, adding it had “not decided on timing yet” and that a listing “may be a while because there are things we want to do that are likely easier as a private company.”

That last clause is the interesting one. It echoes the posture of late-stage private giants from the 2010s unicorn era, where confidential filings functioned less as commitments than as optionality. CFO Sarah Friar told CNBC in April it was “good hygiene” for a company of OpenAI’s size to “look and feel and act” like a public company. The S-1 is the hygiene.

The supporting numbers travel with the filing. OpenAI reported $2 billion in monthly revenue as of March, ChatGPT now claims more than 900 million weekly active users, and a tender offer is planned to let employees sell shares at the $852 billion mark. A federal judge dismissed Elon Musk’s 2024 lawsuit against the company and Sam Altman in late May on statute-of-limitations grounds, clearing one structural overhang just as the bankers got to work.

Three names, $3.6 trillion, one week. The dot-com cohort took years to stack like that.

Sources