Founder Profile
Sam McCandlish
Last reviewed: October 2026 · By Swet Parvadiya
Who is Sam McCandlish?
Sam McCandlish is a founder of Anthropic PBC, which was founded in 2021 with Dario Amodei, Daniela Amodei, Jack Clark, Jared Kaplan, Tom Brown, Chris Olah and Ben Mann.
- Company founded
- Anthropic PBC
- Founded
- 2021
- Co-founders
- Dario Amodei, Daniela Amodei, Jack Clark, Jared Kaplan, Tom Brown, Chris Olah and Ben Mann
Background
Sam McCandlish is a physicist by training who moved into machine learning research. At OpenAI he worked on the empirical study of neural scaling, treating model capability as a predictable function of compute, data and parameters rather than a matter of trial and error.
Founding Story
Sam McCandlish is a co-founder of Anthropic and a researcher known for work on the scaling laws of neural networks. At OpenAI he co-authored research showing a predictable relationship between training compute and model performance. At Anthropic that work informs how the company sizes and plans training runs for the Claude family. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Sam McCandlish. The sources below document the company company rather than the person, so check them against the claims above.
- SEC: Anthropic Form S-1 filed October 26, 2026 (Anthropic PBC)
- Anthropic: Public Form S-1 announcement (Anthropic PBC)