Who is the Co-Founder of Anthropic?

Updated Data as of 2026-09-29

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Sam McCandlish has been the Co-Founder and Chief Architect of Anthropic since 2021 and reports to Dario Amodei. He joined the founding team in 2021 after working as a member of the technical staff at OpenAI, which he left in 2020 along with several of the other co-founders. Before this, Sam was Co-Founder and Chief Architect at Anthropic. Sam is one of 10 tracked leaders at the company.

Sam McCandlish profile

SM
Sam McCandlish
Co-Founder and Chief Architect, Anthropic
Co-founder since 2021

Sam McCandlish is a co-founder of Anthropic and its chief architect, a role listed among the key executives in the company's IPO prospectus.

Reports to
Dario Amodei
Email
••••@anthropic.com

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Find and verify Sam McCandlish's professional email in the Derrick web app (5 credits per email found), or track Anthropic with Signal to be alerted when its leaders change jobs, it raises funds or starts hiring (Standard plan and up).

Sam McCandlish career history

  • Co-Founder and Chief Architect, Anthropic2021 to present
  • Member of Technical Staff, OpenAIuntil 2020

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Other leaders at Anthropic

LeaderEmailProfile
DADario AmodeiDario AmodeiCo-Founder and Chief Executive Officer ••••@anthropic.com
DADaniela AmodeiCo-Founder, President and Chair of the Board ••••@anthropic.com
KRKrishna RaoChief Financial Officer ••••@anthropic.com
RPRahul PatilChief Technology Officer ••••@anthropic.com
JKJared KaplanJared KaplanCo-Founder and Chief Science Officer ••••@anthropic.com
AVAmi VoraChief Product Officer ••••@anthropic.com
PSPaul SmithChief Commercial Officer ••••@anthropic.com
CCChris CiauriManaging Director of International ••••@anthropic.com
MCMariano-Florentino CuéllarMariano-Florentino CuéllarChief Global Affairs Officer ••••@anthropic.com

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More about Anthropic

FAQ

Frequently asked questions

Who is Sam McCandlish?

Sam McCandlish is the Co-Founder and Chief Architect of Anthropic (as of 2026-09-29). Co-founder since 2021. You can see their background and career history above.

What is Sam McCandlish's background?

Sam McCandlish is a co-founder of Anthropic and its chief architect, a role listed among the key executives in the company's IPO prospectus. He joined the founding team in 2021 after working as a member of the technical staff at OpenAI, which he left in 2020 along with several of the other co-founders.

How can I contact Sam McCandlish at Anthropic?

You can find and verify Sam McCandlish's professional email and direct phone number with Derrick, from its web app or Google Sheets. Anthropic's addresses generally follow the first@anthropic.com pattern, but that individual address is not verified here, so confirm it before reaching out.

Who does Sam McCandlish report to?

Sam McCandlish reports to Dario Amodei. See the full org chart on the Anthropic executives page.