OpenAI confidentially filed a draft S-1 with the Securities and Exchange Commission on Monday, telegraphing the move in a blog post that conceded the bureaucratic motive plainly: “We recently submitted a confidential S-1. We expect it to leak so we’re just announcing it.” The disclosure values the company at $852 billion as of its last funding round and positions it for a possible public debut as early as the fourth quarter.

The filing arrives exactly one week after Anthropic submitted its own confidential S-1, and alongside the long-anticipated SpaceX listing expected to trade near $1.75 trillion. Three offerings, one window. It’s a concentration of high-stakes AI and aerospace debuts Wall Street hasn’t seen since the late 1990s, and the comparison isn’t flattering by accident. The 1999 IPO calendar produced both genuine platform businesses and a generation of cautionary tales whose names became shorthand for narrative-driven capital allocation.

OpenAI’s own numbers carry the same duality. The company said it was generating $2 billion in monthly revenue as of March, with roughly 900 million weekly active users on ChatGPT. By its own projections, reported by TechCrunch, it won’t generate more cash than it spends for at least four more years. The Wall Street Journal has reported that internal user and revenue targets were recently missed. Anthropic, by contrast, has told investors it’s close to its first quarterly profit, which sharpens the strategic asymmetry between the two filings rather than blurring it.

The company’s framing is unusually candid about optionality. “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.” A person familiar with the plans told CNBC that OpenAI intends to facilitate a tender offer letting employees sell shares at the latest valuation, which is the part of any pre-IPO maneuver that always matters most to the people inside the building.

Context sharpens the timing. Last month, an advisory jury found Elon Musk’s lawsuit against OpenAI and Sam Altman had been filed too late, clearing legal overhang just as Musk’s own SpaceX, having absorbed xAI earlier this year, approaches the same public markets. Sarah Friar, OpenAI’s chief financial officer, told CNBC in April that conducting itself like a public company was “good hygiene,” language that now reads less like a preference than a calendar.

Nate Elliott, an analyst at Emarketer, called this a “precarious moment” for OpenAI as ChatGPT’s early lead erodes. “But OpenAI doesn’t have a lot of other places to look for the enormous capital required to support its costs.” The 1999 vintage faced the same arithmetic, and resolved it the same way.

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