Anthropic was founded in 2021 by a group of people who left OpenAI together. To understand why the company makes AI safety its signature, the fastest route is to look at who runs it.
This piece covers CEO Dario Amodei’s background, each founder’s current role, and the executives who joined later. For the big picture first, start with What Anthropic is as a company.
Dario Amodei: A CEO Who Started as a Scientist
Dario Amodei is a co-founder and the CEO. Born in 1983, he trained as a physicist at Stanford and Princeton, worked at Baidu and Google, and then rose to VP of Research at OpenAI, where he worked closely on GPT-2 and GPT-3. He is less a business-type CEO and more a researcher who knows how models are built.
He is the company’s main public voice. He speaks often on AI safety and regulation, has testified before Congress, and was named to the TIME 100 list of most influential people. In September 2026 he published an essay, “We Must Pace the Frontier,” arguing for slowing the pace of AI capability progress.
Daniela Amodei: The Other Half, Running Operations
Dario handles the public role and the vision. Day-to-day operations go to his sister, Daniela Amodei. She is a co-founder, the President, and Chair of the Board.
At OpenAI she led safety and policy operations; at Anthropic she runs business operations and built the executive team. Her experience with regulation helped the company break into regulated industries such as finance, healthcare, and government. She was also named to the TIME 100 list of most influential people.
Eight People Who Walked Away from OpenAI
In 2021, this group left OpenAI together. Most accounts agree on why: they believed OpenAI was commercializing too fast and its safety work couldn’t keep up. There are eight founders (the official leadership page currently lists seven). Their roles as of October 2026:
| Founder | Role at Anthropic | Background at OpenAI |
|---|---|---|
| Dario Amodei | CEO | VP of Research, core to GPT-2/GPT-3 |
| Daniela Amodei | President, Chair of the Board | Head of safety and policy operations |
| Jared Kaplan | Chief Science Officer | One of the founders of scaling laws research |
| Jack Clark | Head of Public Benefit | Lead of the policy team |
| Chris Olah | Head of interpretability research | Pioneer of neural network interpretability |
| Tom Brown | Chief Compute Officer | One of the lead authors of the GPT-3 paper |
| Sam McCandlish | Chief Architect (former CTO) | Researcher |
| Ben Mann | Co-leads Anthropic Labs (not on the official leadership page) | Early technical backbone |
This is a team of former colleagues from research, safety, and policy leadership who left together over a shared concern, not a startup group thrown together on short notice. That is why safety is written into the company’s charter and its technology. For the governance design, see Why Anthropic is a public benefit corporation.
The founding team also holds real control. According to Reuters’ September 2026 report on the IPO filing, the seven listed co-founders will control one Class F share through a “Founder LLC” by majority vote, giving them 50.1% of the voting power on major company matters.
Executives Who Joined Later
As of October 2026, the main executives on the official leadership page include:
- Rahul Patil (CTO): Joined in October 2025, taking over from Sam McCandlish, who moved to Chief Architect.
- Krishna Rao (CFO)
- Ami Vora (CPO)
- Paul Smith (Chief Commercial Officer)
- Brian Israel (General Counsel)
- Hannah Pritchett (Chief People Officer)
- Tino Cuéllar (Global Affairs chief): Took the role in August 2026. He was a member of the Long-Term Benefit Trust (LTBT) and left the trust when he started.
With these roles filled, Anthropic has shifted from a research-heavy startup to a company with a full set of business functions.
A Company with “Walking Away” in Its DNA
Anthropic itself was born by walking away from OpenAI, and talent has kept moving in both directions since. For example, OpenAI co-founder John Schulman joined Anthropic in 2024 and left a few months later. In the small world of frontier AI, where top talent goes is itself a signal.
The founding team, by contrast, is stable: as of October 2026, all eight founders still work at the company.
Penchan’s summary
These people could have stayed at OpenAI and shared in the boom that followed. Instead, they left together in 2021 to bet that safety and capability can move forward side by side. Whether that bet pays off will take many years to see, but it gave Anthropic a different foundation from its rivals from day one.
To understand this company, remembering where this team came from is often more useful than remembering its latest model version.
Further reading: What Anthropic is as a company, Why Anthropic is a public benefit corporation, Anthropic vs OpenAI.