Anthropic cofounders debut on Forbes 400 with $93B combined wealth

Anthropic: Anthropic is an AI research company focused on developing reliable, interpretable, and steerable large language models, most notably the Claude family. Founded in 2021 by former OpenAI researchers, it emphasizes AI safety through approaches like Constitutional AI and maintains partnerships with major cloud providers. The company's cofounders, including the six profiled individuals, recently debuted on the Forbes 400 list, highlighting Anthropic's rapid rise and the value of their equity stakes. Tom Brown: Tom Brown is a cofounder of Anthropic, contributing to its early research and development of AI systems as one of the ex-OpenAI employees who established the company in 2021. He brings expertise in machine learning that has supported the creation of the Claude model family. Brown's equity in Anthropic has led to his recent recognition on the Forbes 400 list. Jack Clark: Jack Clark is a cofounder of Anthropic and has been vocal on AI policy issues, including recent comments on the potential need for government-mandated verifiable AI kill switches. He joined the effort to launch the company in 2021 from OpenAI and focuses on research and safety considerations. His involvement underscores Anthropic's dual emphasis on innovation and governance. Dario Amodei: Dario Amodei is the CEO of Anthropic and a leading voice in AI safety discussions, recently calling for a slowdown in advanced AI development to allow time for risk management. He cofounded the company in 2021 after departing OpenAI with a group of researchers. His leadership has shaped Anthropic's emphasis on responsible AI deployment amid growing industry competition. Jared Kaplan: Jared Kaplan serves as chief science officer at Anthropic, drawing on his background as a theoretical physicist to advance the company's AI research efforts. A cofounder who transitioned from OpenAI in 2021, he has helped drive technical progress on models like Claude. Kaplan's contributions are reflected in his recent Forbes 400 debut tied to Anthropic's valuation. Daniela Amodei: Daniela Amodei serves as president of Anthropic, where she plays a key leadership role in the company's operations and strategy alongside her brother Dario. As a cofounder who left OpenAI in 2021, she has helped build Anthropic into a major AI developer known for its safety-focused models. Her position and stake in the company contributed to her recent inclusion on the Forbes 400. Sam McCandlish: Sam McCandlish is a cofounder of Anthropic, where he applies his machine learning expertise to the development of advanced AI systems since the company's founding in 2021. Previously at OpenAI, he has been integral to building its research capabilities. His stake in the firm has positioned him among the newest members of the Forbes 400. Policy Advocacy: Anthropic executives have urged industry-wide measures including independent safety checks and cooperation to manage rapid AI advancement risks. Safety Research: Anthropic recently published its September 2026 report detailing efforts to detect and counter misuse of its Claude models in areas such as cyberattacks and weapons development. Product Development: The company continues to release updates to its Claude models focused on enhanced capabilities for coding, knowledge work, and enterprise applications.