One Rival Filed to Go Public. The Other Raised $11 Billion.

Within eleven days of each other, two of the most closely watched companies in artificial intelligence walked through different doors. Anthropic filed the paperwork to sell shares to the public on October 26. OpenAI closed the first part of a new funding round on November 6 — $11 billion at a $1.25 trillion valuation — while the OpenAI IPO remains on hold.

The two moves draw a line down the middle of the AI industry: one rival is asking the public markets to price it; the other is still asking private investors to do the job, at a valuation that came in below what it had hoped for.

The $11 billion that wasn’t $30 billion

Hands sliding a stack of documents across a dark boardroom table at night, city lights behind the window.

OpenAI has raised $11 billion in the first close of a new funding round that values the company at $1.25 trillion, according to Bloomberg, whose account Reuters confirmed through its own source. The first close was November 6. The round has not closed: Bloomberg reported it could total about $20 billion and is expected to finish in the coming weeks.

That is a large round by any measure. It is also smaller than the company was reported to have sought. In September, Bloomberg reported that the company was seeking $30 billion at a $1.4 trillion valuation. By October 30, the Financial Times reported the target had been cut to about $20 billion. The first close, at $11 billion, is less than half of the $30 billion figure reported in September.

OpenAI’s chief financial officer, Sarah Friar, confirmed the $1.25 trillion figure in a television interview on November 6, while pushing back on reports of a higher starting price.

Context helps here. In March, OpenAI raised $122 billion from investors at an $852 billion valuation. The new $1.25 trillion figure is about 47 percent above that March valuation. So the story is not that OpenAI’s value fell. It is that the company was reported to have gone out asking for more — $30 billion at $1.4 trillion — and closed the first part of the round at $11 billion, with more possibly to come. Whether investors imposed those terms, or the company chose them, the reporting does not say. It is also possible the two companies are simply at different stages, and Anthropic’s filing reflects its own capital needs rather than a race — a reading the evidence does not rule out.

Bloomberg’s reporting ties the lower target to two things: tech stocks dropping, and midterm results that showed how much public opinion has turned against AI companies and data center projects. Whether that public mood actually moved investor pricing, or merely coincided with the stock-market drop, is something the reporting does not settle. It is the open question hanging over the whole round.

The investors in the first close include Coatue Management and T. Rowe Price, according to Bloomberg, with SoftBank and MGX also taking part, according to two investors who spoke to Reuters.

Anthropic files; the OpenAI IPO waits

A lone figure in a dark coat looking up at a glowing tower at dusk, wet pavement reflecting the lights.

Anthropic did its paperwork first. The company filed its S-1 with the Securities and Exchange Commission on October 26, 2026, and an amended version on November 2. It has applied to list its Class A shares on the Nasdaq under the symbol ANT.

The filing is, in the way of such documents, both revealing and blank. It reveals a company of remarkable scale: revenue of $17.0 billion in the quarter ended September 30, 2026, and $33.2 billion across the first nine months of the year, with a $567 million operating loss in the third quarter after a $974 million operating profit in the second.

What it does not reveal is the price. The filing leaves the IPO price range, the share count and the listing date blank. Any valuation you see attached to Anthropic’s IPO comes from reporting, not from the company. The Wall Street Journal reports Anthropic is aiming for a valuation of $1.5 trillion to $2 trillion and a listing in the week of November 16. Other reporting suggests the buyers are considering a figure as low as $1.1 trillion — against roughly $2 trillion expected a month earlier. The same cooling market that trimmed OpenAI’s round may be trimming Anthropic’s too.

Anthropic has filed to enter the public markets. OpenAI, even at a $1.25 trillion valuation, has not filed, and its IPO remains on hold. One rival has chosen the scrutiny, the quarterly reporting and the daily price of being public. The other has taken a private round that has not yet closed.

The quote that hangs over both of them

Earlier this year, OpenAI chief executive Sam Altman said the company was holding off its own IPO until it could make more confident claims about its models’ safety. He gave no specific timeline. But he also said something that now reads like a warning to himself: “I think it’s also kind of bad for the world if OpenAI waits too long to go public.”

That is the tension in a single sentence. Altman’s stated reason for waiting is safety: the company is holding off until it can make more confident claims about its models’ safety. The reporting does not record what he said the world would lose if it waits, only that waiting too long would be bad for the world. What exactly he meant by that — and what would count as a confident enough safety claim — the available reporting leaves open.

The available reporting does not settle either question. What can be said is that the clock Altman described is now ticking louder. If Anthropic’s IPO proceeds, its shares will be priced by the public every day, while OpenAI continues to be priced by a much smaller group of investors, in private, on terms that have already been cut once.

What we still don’t know

Several things remain open, and they matter more than the headlines. Will OpenAI’s round actually reach $20 billion in the coming weeks, and at what final valuation? Will Anthropic’s IPO price in the week of November 16 as reported, and at what valuation — closer to the $2 trillion of a month ago, or the $1.1 trillion its buyers are now said to be weighing? And did the public’s cooling mood toward AI actually move investor pricing, or did it merely arrive at the same moment as a falling stock market?

What is no longer in doubt is that the AI race has split at the capital-markets door. Anthropic has filed to go public. OpenAI, valued at $1.25 trillion, has not filed, and its IPO remains on hold. If Anthropic’s listing goes ahead, the two rivals will be judged by two different kinds of market — and the answers they get may not be the same.