Anthropic’s IPO plans shifted attention from private valuations to public markets. On the 1st of June 2026, the maker of the Claude chatbot submitted a draft S-1 registration statement to the SEC. This was a strategic move to fund AI’s massive capital demands.
The filing came just days after a $65 billion Series H funding round at a $965 billion post-money valuation. That propelled Anthropic ahead of rival OpenAI’s $852 billion valuation.
In addition, SpaceX has already debuted on the Nasdaq on the 12th of June at $1.75 trillion. Three trillion-dollar AI IPOs are now racing toward public markets.
Anthropic’s IPO Surprises the Market With a Confidential SEC Filing
For a start, Anthropic said it “confidentially submitted a draft registration statement on Form S-1 to the SEC for a proposed initial public offering”.
Furthermore, the company has not yet decided on the number or price of shares. Going public will depend on market conditions and other factors.
However, the timing reveals a calculated move. Anthropic and OpenAI are fierce rivals and neither wants to be the last to go public. Going public first sets the valuation yardstick for the entire sector and Anthropic won that race.
The Numbers Behind Anthropic’s Meteoric Rise
Beyond the surprise filing, Anthropic’s valuation has soared at a breathtaking pace. The company was valued at $61.5 billion in March 2025.
By September, that had tripled to $183 billion. In February 2026, it had more than doubled again to $380 billion. By May, investors valued the company at $965 billion.
That’s a 15.7 times increase in little more than a year. In addition, annualized revenue crossed $47 billion in May. That’s up from roughly $9 billion at the end of 2025. This growth is staggering.
Anthropic’s IPO Sets the Stage for a First-Mover Advantage
Moreover, this Anthropic IPO places the company ahead of OpenAI in the race for public capital. Both companies have been rivals since Dario Amodei left OpenAI to co-found Anthropic five years ago.
They compete for users, corporate customers, and investors. Now, they are racing to set the template for how public markets value generative AI.
Consequently, the first mover gets to define the valuation benchmark. Prediction markets had expected OpenAI to file first but Anthropic surprised everyone by filing a week earlier. This first-mover advantage could prove decisive.
IPO Is Not an Exit. It Is a Funding Necessity
To make the IPO work, Anthropic must convince investors it can sustain massive growth. CEO Daniela Amodei told Bloomberg Tech on 4th of June that the IPO aims to fund AI’s “compute black hole”.
In addition, she described a “dual funding black hole” in upfront model training and ongoing inference costs. Venture capital can no longer cover these expenses. “Only a deep and highly liquid public market can sustain such massive capital consumption,” Amodei said.
Unlike OpenAI and xAI, Anthropic does not build its own data centers. The company leases external compute resources flexibly. This “asset-light” strategy avoids the high depreciation costs of underutilized infrastructure.
Two Competing Visions Face the Public Market Test
Taking all this together, the Anthropic IPO will test two competing philosophies. OpenAI, under Sam Altman, pursues aggressive growth and proprietary infrastructure.
Anthropic, founded by former OpenAI leaders, emphasizes safety and flexible compute leasing. Both are now headed for the public markets.
Ultimately, the 2026 IPO window will define the AI era. It will either become the most consequential IPO cycle or the most expensive lesson in narrative versus fundamentals. The public markets will soon decide which vision wins.
