Who Is Dario Amodei? Anthropic's CEO, From OpenAI to the IPO

Dario Amodei is the co-founder and CEO of Anthropic, the AI company behind Claude, as of November 12, 2026. He is 43. A physicist by training, he was VP of Research at OpenAI from 2016 to 2020, then co-founded Anthropic in 2021 with his sister Daniela and five others. He is now leading the company toward a Nasdaq listing under the ticker ANT.

His age, titles, career dates, pay and share count all come from the amended S-1 prospectus Anthropic filed on November 10, 2026. Where this profile goes beyond the filing, it says who said what, and when. The ticker itself is explained in MEXC's guide to ANT stock.

Key Takeaways

• Dario Amodei is Anthropic's Chief Executive Officer, a co-founder and a director.
• Anthropic's amended S-1 lists his age as 43 as of October 31, 2026.
• He holds a Ph.D. in biophysics from Princeton and a B.S. in physics from Stanford.
• He was VP of Research at OpenAI from 2016 to 2020, after a year at Google Brain.
• He owned 240,637,980 Anthropic shares as of September 30, 2026, and plans to sell 3,378,378 in the IPO.
• He has publicly predicted that powerful AI could arrive within a few years, a view other AI leaders dispute.

What Is Dario Amodei's Background?

Dario Amodei's background is in physics and biology, not computer science. He earned a B.S. in physics from Stanford and a Ph.D. in biophysics from Princeton, then completed a postdoctoral fellowship at Stanford University School of Medicine. He moved into AI research only after that.

His first well-known AI work was in speech recognition. Deep Speech 2, a December 2015 paper from Baidu Research's Silicon Valley AI Lab, lists him among its authors. The filing does not cover that period, so the paper is the source for his time at Baidu.

From October 2015 to June 2016 he was a Senior Research Scientist at Google Brain. He joined OpenAI the following month.

What Did Dario Amodei Do at OpenAI?

Dario Amodei was VP of Research at OpenAI from July 2016 to December 2020. That put him in the lab's research leadership during the years it built its early GPT language models. His sister Daniela joined OpenAI in October 2018, and the other five future Anthropic co-founders worked there too.

Two papers from 2020 show who he was working with. He is a listed author of Scaling Laws for Neural Language Models, published that January with Jared Kaplan, Sam McCandlish and Tom Brown.

He is also an author of the paper that introduced GPT-3 in May 2020. Brown is its first-listed author, and Kaplan, McCandlish and Jack Clark are on the list as well. Within a year, all of them were co-founders of Anthropic.

Why Did Dario Amodei Leave OpenAI?

Dario Amodei has said he left OpenAI because he and a group of colleagues held a different view of how AI should be built, and wanted to act on it in their own company. He has described the reasons several times, in slightly different words.

In July 2023, he told Fortune at its Brainstorm Tech conference that the group believed two things. One was that AI models keep improving as more computing power is added. The other was that making them safe needs separate work on top of that. He said the group trusted each other and wanted to work together.

In a podcast interview reported by Inc. in November 2024, he said arguing for his vision inside someone else's company was not worth it. He also said the claim that the group left over OpenAI's deal with Microsoft was false.

He was asked again in June 2026 on Bloomberg. According to Business Today's report on the interview, he framed the split as a matter of vision and trust, and said he was comfortable with each company going its own way.

The relationship with OpenAI's chief executive, Sam Altman, comes down to two facts. The two were colleagues at OpenAI, and they now lead competing AI companies. MEXC's guide to the Anthropic and OpenAI IPO plans compares the two companies.

What Does Dario Amodei Do as Anthropic's CEO?

As CEO, Dario Amodei leads Anthropic and sits on its board. He has held both roles since the company was co-founded in January 2021. The filing lists him as one of three executive officers, with President Daniela Amodei and CFO Krishna Rao.

The company he leads is built around a stated mission: to develop and maintain advanced AI responsibly, for the long-term benefit of humanity. Anthropic is a public benefit corporation, so its board must weigh that purpose next to stockholders' financial interests.

The filing's section on culture gives a sense of how the company works under him. Anthropic has about 5,300 employees, and it says Claude wrote more than 90% of the contributions to its own codebase in September 2026. It pairs safety research with research on making models more capable. Its listed values include putting the mission first.

Whether that business makes money is a separate question, answered in MEXC's guide to Anthropic's revenue, losses and cash burn. The most recent quarter is covered in the breakdown of Anthropic's Q3 2026 results.

What Has Dario Amodei Said About the Future of AI?

Dario Amodei has put specific dates and numbers on his forecasts about AI. They are his views, not established facts, and other industry leaders dispute them.

In Machines of Loving Grace, an essay from October 2024, he wrote that what he calls powerful AI could arrive as early as 2026. He argued it could then pack 50 to 100 years of progress in biology and medicine into 5 to 10 years. In The Adolescence of Technology, a follow-up from January 2026, he turned to the risks and said powerful AI could be one to two years away, or could take much longer.

His best-known warning is about jobs. He told Axios in May 2025 that AI could wipe out half of entry-level white-collar jobs within one to five years and push unemployment to 10% to 20%. Nvidia CEO Jensen Huang and AI researcher Yann LeCun have both publicly rejected that forecast.

What Is Dario Amodei's Role in the Anthropic IPO?

Dario Amodei is a selling stockholder in the IPO and part of the founder group that will keep voting control. He beneficially owns 240,637,980 shares, plans to sell 3,378,378 of them, and has agreed to a lock-up of up to 365 days on the rest. He has also pledged 80% of his Anthropic equity to philanthropy.

He also holds voting proxies over 4,621,120 shares that belong to donor-advised funds. He can direct how those shares vote, but they are not his economic stake.

His own count includes 2,185,400 option shares and 639,500 restricted stock units that can be exercised or settled within 60 days, the parts of his equity awards that have vested or are about to.

At the $74 midpoint of the $70 to $78 range, his 240,637,980 shares would be worth about $17.8 billion on paper, and the shares he is selling about $250 million.

Based on 13,086,672,593 shares outstanding after the offering, the same range would give Anthropic a market cap of about $916.1 billion to $1.02 trillion.

His sale is the same size as every other co-founder's. Each of the seven is selling 3,378,378 shares, about 1.4% of his or her holding, and keeping the rest under a lock-up period of up to 365 days. The filing says each has pledged 80% of their personal Anthropic equity to philanthropic causes.

The filing shows his annual base salary rose from $600,000 to $700,000 on June 16, 2025, then to $915,000 on January 16, 2026 and $1,380,000 on July 1, 2026.

Control does not depend on his share count. The seven co-founders hold a single Class F share through a Founder LLC, and that share carries 50.1% of the general stockholder vote. MEXC's walkthrough of what the Anthropic IPO prospectus reveals explains how the share classes work.

Before pricing, management presents the company to institutional investors, a step explained in MEXC's guide to the Anthropic IPO roadshow. What the price range implies for the whole company is covered in the guide to Anthropic's IPO valuation.

The pricing date and first trading day have not been announced, and media reports pointing to the week of November 16 are unconfirmed. MEXC's page on the Anthropic IPO date and status tracks what is official. New filings are logged in MEXC's Anthropic IPO news tracker.

Follow the Anthropic Pre-IPO Countdown on MEXC

MEXC View: How Should Readers Weigh Dario Amodei's Profile?

Our view is that Dario Amodei is an unusual chief executive for a company going public. He has put detailed, dated forecasts on the record before the IPO, naming years and percentages where many executives stay general.

That cuts both ways: he is easy to hold to account, and Anthropic will be judged partly against his words. Fortune's AI editor has noted that one of his past forecasts came true inside Anthropic well before it did across the industry.

The filing tells a quieter story. His $1,380,000 salary is small next to a stake of more than 240 million shares, and he has pledged 80% of that stake to philanthropy. Control rests on the founders' shared Class F share, not on his own shares.

We think the useful habit is to keep two lists. The filing gives facts: roles, dates, shares, pay and lock-up. The essays give opinions that informed people dispute. Weigh them differently.

None of this is a view on the stock's price.

Frequently Asked Questions About Dario Amodei

How old is Dario Amodei?

Anthropic's amended S-1 lists Dario Amodei's age as 43 as of October 31, 2026.

Where did Dario Amodei go to school?

He holds a B.S. in physics from Stanford and a Ph.D. in biophysics from Princeton, and completed a postdoctoral fellowship at Stanford University School of Medicine.

Why did Dario Amodei leave OpenAI?

He has said he left with a group of colleagues who shared a different vision of how to build AI safely and wanted to pursue it in their own company.

Did Dario Amodei work at Baidu?

He is a listed author of Deep Speech 2, a December 2015 speech recognition paper from Baidu Research's Silicon Valley AI Lab.

Is Daniela Amodei Dario's sister?

Yes, Daniela Amodei is his sister, and she is Anthropic's President, co-founder and board chairperson.

What is Dario Amodei's salary?

His annual base salary has been $1,380,000 since July 1, 2026, up from $700,000 in mid-2025, according to Anthropic's amended S-1.

Conclusion

Dario Amodei went from physics to AI research to running a large AI company headed for a public listing. The filing fixes the facts about his role and stake. His forecasts are a separate matter, to weigh against the people who disagree.

More Anthropic Guides

• When Is the Anthropic IPO? Anthropic IPO Date, Plans and Status for 2026
• Is Anthropic Stock Public Yet? Does Anthropic Have a Stock, Ticker ANT and How to Buy
• Where Is Anthropic's S-1? Inside the Anthropic IPO Filing and Its November 2026 Amendment
• Anthropic IPO Prospectus Explained: What the S-1 Reveals About Revenue, Losses, Control and Risks
• Anthropic IPO News 2026: Latest on the S-1 Amendment, Ticker ANT and Listing Date
• Anthropic Q3 2026 Results: $16.96 Billion in Revenue, a $567 Million Operating Loss, and What It Means for the IPO
• Is Anthropic Profitable? Annual Revenue, Q3 2026 Losses and Cash Burn Explained
• Anthropic IPO Valuation: From $965 Billion to a Reported $1.5 Trillion, Every Round and Who Owns What
• Can You Buy Anthropic Stock Before the IPO? Three Routes Compared
• Can You Get Anthropic Shares at the IPO Price? How to Buy the Anthropic IPO From Anywhere
• When Will Anthropic List? What the Polymarket Anthropic IPO Odds Say Now
• Anthropic vs OpenAI IPO: Anthropic Lists First — What's Confirmed and What's Still Rumor
• Can You Still Get In Early? SpaceX, OpenAI, Anthropic and Databricks IPO Plans 2026
• ANT Stock: Anthropic's Ticker, IPO Date and How to Buy It (Not Ant Group)
• Anthropic IPO Price Per Share: How to Estimate It Before the Price Range Is Set
• What Is Anthropic Tokenized Stock? How It Works Before and After the ANT IPO
• Can You Short Anthropic Stock? How Shorting ANT Works Before and After the IPO
• Anthropic IPO Roadshow: When It Starts, Who Runs It and What Happens Next
• Will Anthropic Join the Nasdaq-100 or the S&P 500? How Index Inclusion Works for ANT

Disclaimer: This article is for informational purposes only and does not constitute investment, legal or tax advice. IPO timing, pricing and allocations can change. Share counts are from Anthropic's SEC filings and may change at pricing.

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