OpenAI IPO Slips to 2027 as Altman Holds $1T Line

The most anticipated technology listing in years is drifting further out. According to reporting this week, OpenAI is now leaning toward a 2027 stock market debut rather than a 2026 one, as chief executive Sam Altman holds out for a valuation of at least $1 trillion and declines to compromise on the figure. The shift would leave open the possibility that rival Anthropic, which filed confidentially in June, reaches the public markets first.

The timeline has moved before. OpenAI confidentially filed for an initial public offering on June 8, 2026, and internal expectations at the time pointed to a listing as early as late 2026. Those expectations have since slid. Chief financial officer Sarah Friar told employees at a recent all-hands meeting that OpenAI “will be a public company in 2027, or earlier if growth accelerates,” a formulation that reframes a possible 2026 debut as the optimistic case rather than the base case.

Altman himself acknowledged the slippage in unusually direct terms. Speaking on a podcast with David Senra on August 23, he said he had been wrong — “not about the destination, but about the clock.” The comment lands as OpenAI pursues the trillion-dollar target that Altman has reportedly treated as a non-starter to negotiate below.

The numbers behind the delay

The paradox of the delay is that OpenAI’s business has rarely looked stronger. The company’s annualized revenue run rate topped $40 billion in August, a sharp acceleration after holding near $25 billion — roughly $2 billion a month — from February through May. Management has attributed the jump to a widening mix of revenue: subscription growth, rapid uptake of its AI coding tools, and a nascent advertising business layered onto the consumer product.

The consumer reach is the foundation. OpenAI confirmed on July 31 that ChatGPT had crossed 1 billion weekly active users, up from roughly 900 million in February and 400 million a year earlier. That user base is the asset public-market investors would ultimately be underwriting — a distribution engine at a scale few software companies have ever reached.

Private markets have already repriced the company upward. OpenAI confirmed an $852 billion valuation in August, the same mark at which it priced a $7 billion employee tender offer that let staff sell shares. Getting from $852 billion to a $1 trillion IPO valuation is not a large leap in percentage terms — but it is the round number Altman appears unwilling to fall short of when the company finally rings the bell.

Why hold out for a trillion

Holding for a specific headline valuation is partly symbolic and partly strategic. A trillion-dollar debut would make OpenAI one of the largest IPOs in history and set an anchor for every subsequent AI listing. It would also hand the company a deep, liquid currency — public stock — for acquisitions and for the compute deals that increasingly define the sector.

That last point is not abstract. OpenAI has committed to spending on a scale that only durable capital access can sustain, including plans that run toward $750 billion in compute over the rest of the decade and financing arrangements such as the $105 billion package backing its Ohio data center. A company burning through capital at that rate has every incentive to enter the public markets from a position of maximum strength — and every incentive not to leave money on the table by listing a beat early at a lower price.

There is a countervailing risk, though. Waiting means exposure to whatever the market looks like in 2027. The AI trade has been volatile through 2026, and a listing timed for a soft window could clear at a worse number than a disciplined 2026 debut. Altman’s bet is that revenue growth will more than compensate for the extra wait.

The race with Anthropic

The delay reshuffles the order of the field. Anthropic, the maker of Claude, filed confidentially in June at a reported valuation near $965 billion with roughly $47 billion in annualized revenue, and its shares have changed hands in secondary markets at levels implying a valuation above $1.2 trillion. If OpenAI holds for 2027, Anthropic could well be the first of the frontier labs to complete a public offering.

Being first carries both advantages and hazards. The first frontier-lab IPO sets the template — the disclosure norms, the multiple, the investor appetite — that later entrants must contend with. A strong debut would validate the category and could pull forward the timelines of peers; a weak one would cast a shadow over everyone still in the queue. OpenAI’s willingness to let a competitor go first suggests confidence that its own scale will command attention whenever it chooses to list.

What to watch next

A confidential filing keeps the details private until OpenAI decides to flip to a public prospectus. When that happens, the lines that will matter most:

• Gross margins. A $40 billion run rate is a headline; the cost of serving it — inference and training compute — determines whether scale becomes profit.
• The corporate structure. OpenAI’s for-profit and nonprofit arrangement, and the government’s reported stake in the company, are the kind of governance questions public investors scrutinize closely.
• Capital commitments. The multi-year compute and data-center obligations that fund OpenAI’s roadmap will show up as liabilities on the balance sheet.
• Retention and pricing. With open-weight models closing the gap and an ongoing price war across the industry, durability of the revenue curve is the whole ballgame.

What it means

The delay is a statement about leverage, not weakness. OpenAI is choosing the timing and the price of its own debut, and it is doing so from a position that few companies ever occupy: a billion weekly users, a run rate compounding toward $50 billion, and a valuation already north of $850 billion in private markets. Holding for a trillion is a bet that patience is cheaper than the discount an early listing would carry.

The winners of a 2027 timeline are OpenAI’s insiders, who get more time for revenue to grow into Altman’s number, and the bankers positioning for what could be the largest technology IPO ever. The risk sits with the same insiders if the AI trade turns before the window opens — a valuation held out for is only worth what the market will pay on debut day.

For the rest of the sector, the sequencing is the story. With OpenAI stepping back, Anthropic is now the likeliest first mover among the frontier labs, and its offering will set the terms of the debate for everyone behind it. The two most valuable AI companies in the world are both queued for the public markets; the only open question is who goes first, and at what number. Watch for the moment either lab converts its confidential filing into a public S-1 — that is when the abstract trillion-dollar figures meet real buyers.