ChatGPT-maker OpenAI has filed confidentially for an initial public offering, the company announced Monday in a blog post. The filing comes a little more than a week after its main rival, Anthropic, also filed to go public, ramping up the race between the two AI firms.
OpenAI, which was last valued at $852 billion post-money, submitted a draft registration statement to the U.S. Securities and Exchange Commission for a proposed IPO. The company didn’t list the number of shares or set a price.
The filing is the latest signal that 2026 will be a blockbuster year for the public markets. SpaceX is also expected to make its debut at a $1.75 trillion valuation, meaning three of the most closely watched companies in tech could all go public within months of each other — a concentration of high-stakes offerings the markets haven’t seen in a generation.
OpenAI is racing to IPO even as it recently missed its own targets for new users and revenue, per The Wall Street Journal. Its chief financial officer, Sarah Friar, has reportedly raised concerns that OpenAI may not be able to support its massive data center spending. And the burn does appear to be massive.
In late March, OpenAI secured $122 billion in the largest funding round in Silicon Valley history — $3 billion of which came directly from retail investors via bank channels. But the firm expects to spend roughly that same amount on computing power for AI research alone in 2028, and projects burning $85 billion that year even after doubling sales from the year prior, per The Wall Street Journal. For context: OpenAI is asking public market investors to buy into a business that, by its own projections, won’t generate more cash than it spends for at least four more years.
SpaceX offers a parallel data point. Its AI spending, while not as massive, illustrates how the cost to train large language models can exceed the revenue those models generate — a structural challenge the entire industry is grappling with, and one that public market investors will have to price.
Anthropic, on the other hand, has provided investors a much rosier picture of its financials, saying that it is close to achieving its fir …