Anthropic has made a confidential IPO filing

The most expensive AI startup Anthropic has submitted a confidential IPO filing to the US Securities and Exchange Commission (SEC), according to a company statement.

"This gives us the opportunity to go public after the SEC completes its document review," Anthropic said in a statement. - The conduct of the proposed initial public offering will depend on market conditions and other factors."

The number of shares to be offered to investors and the offering price have not yet been determined, Anthropic wrote.

In doing so, the company beat out rival startup OpenAI, which is preparing its own confidential filing, CNBC notes. These listings could be among the largest in history, along with the debut of Elon Musk's private space company SpaceX: it has published a prospectus and is preparing for a roadshow this week, with bidding scheduled to begin next week, CNBC added.

Anthropic has seen explosive growth this year: in May, it announced that its revenue run rate was $47 billion versus $10 billion in actual annual revenue in 2025. Last week, Anthropic closed a funding round with a $965 billion valuation, surpassing the $852 billion valuation of rival AI startup OpenAI at the end of March.

Following the news of Anthropic's IPO, shares of enterprise video calling service developer Zoom Communications jumped more than 11%. The company is one of the early investors in the AI startup: it took a stake in Anthropic of more than $1 billion from its investment made in 2023, Bloomberg claims.

Also on Monday, securities of Salesforce, a developer of software for marketers, jumped by 10%. The company owns a stake in Anthropic worth about $5 billion, Bloomberg wrote, citing sources. Salesforce has repeatedly participated in funding rounds for the AI startup, the agency said. Anthropic's models help power artificial intelligence features in Salesforce's software, including Slack, a workplace communications tool.

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