Humanity File public

Anthropic, the AI ​​lab behind Claude, has filed confidentially for an IPO, the company announced in a blog post Monday.

The company, valued at nearly $1 trillion, has submitted a draft registration statement to the U.S. Securities and Exchange Commission for a proposed initial public offering. Anthropic has not yet indicated the number of shares or set the price. Anthropic said the proposed initial public offering would depend on market conditions and other factors.

The filing comes less than a week after Anthropic raised $65 billion in a Series H funding round that took its valuation to $965 billion. The round, co-led by Altimeter Capital, Dragoneer, Greenoaks, Sequoia Capital, Capital Group, Coatue and D1 Capital Partners, attracted a large number of institutional and strategic investors in anticipation of an IPO.

Anthropic's confidential filing landed in an already red-hot IPO season that includes SpaceX's IPO that is targeting a $2 trillion valuation. SpaceX is looking to raise more than $75 billion.

A confidential IPO filing allows a company to begin preparing for a possible public offering without publicly disclosing detailed financial information, risks or other internal business details. Anthropic will evaluate the IPO privately and without the critical eye of the public. If this comes to fruition, Anthropic will file an S-1 registration document that will contain detailed information about the company's finances, legal matters, risks and a breakdown of who holds the most voting rights.

Anthropic's filing also comes as rival OpenAI continues to raise funds, including a $122 billion funding round in March for a post-money valuation of $852 billion, and prepares for its own IPO. OpenAI is expected to file an initial public offering, paving the way for an IPO season that will pit the two largest AI labs against each other and test the market's resolve and interest in artificial intelligence.

Anthropic, now an AI powerhouse that has attracted high-profile enterprise clients, was once considered an outsider in the emerging world of big language models. The startup was founded in 2021 by former OpenAI employees and was seen for years as a distant competitor to OpenAI and its AI chatbot, ChatGPT.

The company has attracted investors and customers with growing capabilities and a focus on business services. This has resulted in staggering revenue growth. The company recently said its revenue had surpassed $47 billion, up from $9 billion at the end of 2025.

This revenue growth rate could accelerate as Anthropic makes its Mythos model more widely available. Anthropic previewed Mythos in April but maintained restricted access – warning software developers that the model had discovered thousands of high-severity bugs that would need to be fixed before it could be made public.

The generative AI lab is close to giving the European Union's cybersecurity agency access to Mythos, Bloomberg reported Monday morning, citing unnamed sources.