Key Takeaways:
Anthropic, the artificial intelligence lab behind the Claude chatbot, confidentially filed for an initial public offering with the SEC on June 1, setting up what could be the first test of whether public markets can stomach a trillion-dollar AI listing during a period of intense sector euphoria.
"The 2026 window either becomes the most consequential IPO cycle since the dot-com era or the most expensive lesson in narrative-versus-fundamentals that public markets have ever taught," said Harrison Rolfes, an analyst at PitchBook.
The filing comes just days after Anthropic closed a $65 billion Series H funding round at a $965 billion post-money valuation, surpassing OpenAI's $852 billion valuation to become the most valuable private AI company. The company's annualized revenue run rate reached $47 billion by the end of May, up from roughly $30 billion in April and about $10 billion a year earlier. Anthropic expects to turn an operating profit in the current quarter, according to media reports — a milestone OpenAI is not projected to reach until at least 2030.
The listing drops Anthropic into a three-way sprint for the public markets alongside SpaceX, which priced its IPO at a $1.77 trillion valuation on June 3, and OpenAI, which is reportedly targeting a valuation above $1 trillion. Combined, the three companies could absorb nearly $200 billion in new capital, an amount Bloomberg Television described as unprecedented in recent financial history. Polymarket bettors place a 53% probability that Anthropic's stock closes its first trading day above a $1.8 trillion market capitalization.
Valuation math favors Anthropic — for now
Anthropic's IPO valuation math looks more grounded than its rivals'. At a $1 trillion valuation, the company would trade at roughly 21 times its $47 billion revenue run rate. OpenAI, by comparison, would command a roughly 40 times multiple on its reported $25 billion revenue run rate if it targets a $1 trillion valuation. SpaceX, with $18.7 billion in 2025 revenue and a $1.77 trillion valuation, would trade at about 95 times trailing revenue.
CEO Dario Amodei said on a podcast in February that Anthropic is "spending somewhat less than some of the other players," a reference to the capital discipline that has distinguished it from OpenAI, which has roughly $600 billion in data center commitments by 2030. Anthropic's more conservative approach to infrastructure spending has helped it maintain a clearer path to profitability.
The company also moved to demonstrate product momentum the day after its IPO filing, scaling its most powerful AI model, Claude Mythos, to roughly 150 organizations across more than 15 countries. The expanded access, part of Project Glasswing, includes partners running power grids, water systems, hospitals and communications networks — a signal to prospective investors that Anthropic's technology is embedded in critical infrastructure.
The trillion-dollar question
The biggest unknown remains gross margin, a figure that has never been disclosed by any frontier AI lab. "No one outside Anthropic has ever seen it, and it will either validate or collapse the entire narrative the private markets have been pricing for three years," Rolfes said. The cost of serving AI models — compute, energy, data center capacity — is extraordinarily high, and the percentage of revenue left after those costs will determine whether the valuation is justified.
Gil Luria, head of technology research at D.A. Davidson, said Anthropic's unprecedented growth and apparent lead in frontier AI models support a high valuation. But he cautioned that "much of their current usage is for trials and experimentation and that may not sustain," while well-funded competitors including Google, Meta and OpenAI could disrupt Anthropic's lead.
The IPO filing will also have implications beyond Anthropic. "That disclosure will not only reprice private competitors but also provides insight to every enterprise attempting to value and price the future cost of intelligence in their company," said Eric Goodness, VP analyst at Gartner.
Anthropic has not set a pricing date or disclosed the number of shares to be offered. The company said it will proceed with the IPO depending on market conditions.
This article is for informational purposes only and does not constitute investment advice.
