What Daniela Amodei says separates successful startup founders from the rest
The Anthropic president emphasizes personal compatibility and a common mission, arguing that founders must agree on what they are building as well as how they will work together.
Behind every successful startup are its founders, the people responsible for shaping its vision, raising initial capital and turning an idea into a business. According to Daniela Amodei, president and co-founder of Anthropic, one of the most important factors in a startup's success is the relationship between its founders.
Amodei speaks from experience. She co-founded Anthropic in 2021 alongside her brother, Dario, and five other co-founders. In an interview with Forbes, she explained that turning a startup into an industry leader requires founders to be aligned on a wide range of issues, from fundraising and company structure to their overarching mission. She also has an unconventional way of testing whether potential co-founders are a good match.
"Instead of starting a company together, go on vacation together," she advised during a talk at Stanford Graduate School of Business earlier this year. Her suggestion is to share a room and see how the experience unfolds. If, afterward, the prospect of spending more time together is appealing, that is a good sign. If the trip leaves you needing another vacation to recover, she suggested, the partnership may be a mistake.
Amodei said she was extremely lucky with her own founding team. Her fortune has grown alongside Anthropic's rise: Forbes has estimated her net worth at $15.5 billion. According to the company's IPO prospectus, she received total compensation of $16.4 million last year, largely in stock and other awards rather than salary.
One of her closest relationships is with her older brother, Dario, Anthropic's CEO. The two have spent decades learning how to work through disagreements. At Stanford, Daniela explained that they had been fighting and making up for almost 40 years, joking that she used to steal his toys as a child. Their bond, she said, means they know they will still love each other after an argument.
She also had a long history with her other co-founders before they launched Anthropic. She had known Jared Kaplan and Chris Olah for about 15 years, while Tom Brown and Sam McCandlish had been roommates, and Kaplan and McCandlish had worked together at Stanford during their doctoral studies. Dario and Daniela had managed the other founders at OpenAI, giving the group an established framework for working together, exchanging feedback and understanding one another.
For Amodei, personal compatibility is only part of the equation. Founders must also share a clear understanding of what they are trying to build. She illustrated the point at Stanford with a comparison: if two co-founders independently sketched their vision for a company, one should not end up drawing a unicorn while the other draws a platypus. A mismatch of that kind, she warned, suggests they may not actually agree on the company's direction.
In Anthropic's case, the founders shared a broad sense of what they wanted to do differently. They had worked together at OpenAI and came to believe they could pursue AI development with a stronger emphasis on safety. That common outlook helped them leave together and establish a rival company in 2021.
Anthropic, the developer of the Claude family of AI models, has since become one of the world's leading AI companies. Its planned public offering is expected to be among the most closely watched listings in the technology sector. The company's IPO prospectus points to a potential valuation of more than $2 trillion, although the final terms will depend on market conditions and investor demand.
While Amodei emphasizes the founders' shared outlook, profiles of her in recent years have highlighted how different she is from many other prominent AI executives.
A CNBC report published in January portrayed her as a contrast to the more familiar AI-founder archetype, associated with figures such as OpenAI CEO Sam Altman and SpaceX CEO Elon Musk. It also highlighted the different roles she and her brother play at Anthropic: Dario is often seen as the technical visionary, while Daniela focuses on building the organization and putting the foundations in place for its ambitions. Former OpenAI colleagues have similarly described her as her brother's emotionally intelligent counterpart.
Her background is also unusual for a technology executive. Amodei holds a bachelor's degree in English literature from the University of California, Santa Cruz, where she studied on a scholarship earned through her flute-playing skills. She began her career in politics, managing communications for Congressman Matt Cartwright, before joining fintech company Stripe in 2013. She moved to OpenAI five years later.
Amodei is married to Holden Karnofsky, and they have a son. A recent article in The Atlantic about the rivalry between Anthropic and OpenAI described another unconventional aspect of her approach to management: the couple's collection of stuffed animals, which they used as a kind of personal advisory council for role-playing exercises designed to help work through conflicts.
Each animal had its own personality. Jinji, a lazy cat, encouraged Amodei to cancel meetings and avoid taking on too much work. Maura, a pink bear, represented a detail-oriented, highly organized manager. A panda named Beary Bonds embodied generosity and empathy.
Amodei told The Atlantic in 2023 that the animals were "very useful in analyzing different personality types." The publication noted that former OpenAI colleagues who knew about the practice were unsure how seriously she took the animals' advice.
The stuffed animals offer a more personal glimpse into the way Amodei thinks about relationships and conflict. Her advice to aspiring founders is more straightforward: a shared business idea is not enough. They need to know how to disagree, understand each other's personalities and remain committed to the same goal.
Which raises one final question about her vacation test: if Amodei ever takes her Anthropic co-founders on a trip together, will the stuffed animals be coming along, too?
