Anthropic's Compute Contracts Reach $349.9 Billion as Founders Retain 50.1% Voting Power

Anthropic filed its S-1 prospectus with the SEC on October 26, laying out a spending plan measured in hundreds of billions.

The filing commits roughly $3.1 billion per month to SpaceX for Nvidia GPUs once all planned capacity is delivered, totaling as much as $120.5 billion by 2029. Other listed commitments include $44.9 billion with Microsoft through 2033, at least $114.5 billion with Google through 2033, and $110 billion with Amazon over the next ten years. Anthropic also plans to expand its own infrastructure footprint overseas, the filing states, as it faces increasing opposition to data center development in the US.

Compensation runs through the same document. Chief executive Dario Amodei received nearly $18 million in 2025, most of it stock and option awards, while president Daniela Amodei received $16.4 million. The company also spent $2.75 million on personal security services for Dario and $1.29 million for personal protection, home security, and transportation services for Daniela. Dario's private jet access for personal use cost another $97,055. Anthropic states its success is "highly dependent on the continued service" of its senior team, and that Dario and Daniela "are critical" to advancing its research and mission.

Risk disclosures in the prospectus go beyond the usual list of competition and regulation. Anthropic warns that AI systems could cause potentially "catastrophic" harm of a kind that could not be underwritten by the entire "insurance industry in the aggregate." The filing also raises whether Claude or any other AI system could possess or develop "forms of sentience," a scenario it says would present business challenges, and notes systems "may behave in unintended, misaligned, or autonomous ways" that could damage the company.

The corporate structure contains another unusual element. Anthropic operates as a public benefit corporation, and through a separate entity called Founder LLC, its seven cofounders will collectively control 50.1 percent of shareholder voting power over key matters after the IPO. The company writes that the seven founders "are distinctly equipped to be stewards of our mission" of benefiting humanity through responsible AI development.

For direct competition, the filing names two developers: OpenAI and Google. The prospectus runs to more than 300 pages and discloses executive compensation, spending plans, and risks that could derail its ambitions.