Anthropic was founded in 2021 by seven researchers who left OpenAI together — one of the most consequential mass departures in the history of technology. Each founder brought distinct expertise: machine learning research, interpretability, physics, engineering, policy. Together they built one of the world’s most valuable AI companies. This page profiles all seven co-founders and links to their individual biographies.
1. Dario Amodei — CEO
Background: PhD computational neuroscience, Stanford. VP of Research at OpenAI.
At Anthropic: CEO and primary public voice. Leads company strategy, safety philosophy, and external engagement. Author of “Machines of Loving Grace.”
Net worth: Forbes estimates $7B as of February 2026.
2. Daniela Amodei — President
Background: VP of Operations at OpenAI, Stripe, Pilot.com.
At Anthropic: President, responsible for business operations, go-to-market strategy, enterprise sales, and revenue. The operational and commercial counterpart to Dario’s research-focused leadership.
Note: The Amodei siblings represent an unusual sibling co-founder pair at the helm of a frontier AI company.
3. Jared Kaplan — Chief Science Officer
Background: PhD theoretical physics. Co-author of “Scaling Laws for Neural Language Models” (2020) — the most practically important AI research paper of the decade.
At Anthropic: Chief Science Officer. Responsible for the scientific research direction underlying Claude’s development.
Net worth: Forbes estimates $3.7B. TIME100 AI honoree. U.S. Senate testimony.
4. Chris Olah — Interpretability Research Lead
Background: Thiel Fellow. No university degree. Pioneered neural network interpretability research across Google Brain, OpenAI, and Anthropic. Co-founded the Distill journal.
At Anthropic: Leads interpretability research — the science of understanding what’s actually happening inside neural networks.
Net worth: Forbes estimates $1.2B.
5. Tom Brown — Head of Core Resources
Background: M.Eng, MIT (CS + Brain/Cognitive Sciences). Lead engineer on GPT-3 at OpenAI. Lead author on “Language Models are Few-Shot Learners.”
At Anthropic: Leads Core Resources — the compute infrastructure and technical operations that make Claude’s training possible.
6. Sam McCandlish — Chief Technology Officer
Background: PhD theoretical physics, Stanford. Postdoc at Boston University. Co-author of the foundational AI scaling laws paper alongside Jared Kaplan.
At Anthropic: CTO and Chief Architect. Responsible for Anthropic’s technical direction, architecture decisions, and training methodology.
Net worth: Forbes estimates $3.7B.
7. Jack Clark — Head of Policy
Background: Technology journalist at Bloomberg. Head of Policy Research at OpenAI. Founded the Import AI newsletter.
At Anthropic: Leads policy and external affairs. Launched the Anthropic Institute in March 2026 — the company’s dedicated AI governance research division.
Unique distinction: The only Anthropic co-founder without a technical research background, bringing journalism and policy expertise to the founding team.
Key Non-Founder Leaders
Benjamin Mann (not a co-founder but a key early member): Columbia CS. GPT-3 architect at OpenAI. Co-leads Anthropic Labs alongside Instagram co-founder Mike Krieger.
Mike Krieger: Instagram co-founder who joined Anthropic in 2023. Co-leads Anthropic Labs with Benjamin Mann, bringing consumer product scale experience to frontier AI research.
Frequently Asked Questions
How many co-founders does Anthropic have?
Seven. Dario Amodei, Daniela Amodei, Jared Kaplan, Chris Olah, Tom Brown, Sam McCandlish, and Jack Clark — all former OpenAI researchers and leaders.
Are Dario and Daniela Amodei siblings?
Yes. Dario (CEO) and Daniela (President) Amodei are brother and sister — an unusual sibling co-founder pair at the leadership of a frontier AI company.
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