Founder Profile
Tom Brown
Last reviewed: October 2026 · By Swet Parvadiya
Who is Tom Brown?
Tom Brown is a founder of Anthropic PBC, which was founded in 2021 with Dario Amodei, Daniela Amodei, Jack Clark, Sam McCandlish, Jared Kaplan, Chris Olah and Ben Mann.
- Company founded
- Anthropic PBC
- Founded
- 2021
- Co-founders
- Dario Amodei, Daniela Amodei, Jack Clark, Sam McCandlish, Jared Kaplan, Chris Olah and Ben Mann
Background
Tom Brown is an engineer who specialises in large-scale distributed training. At OpenAI he worked on the infrastructure needed to train models across large GPU clusters, experience that shaped Anthropic's early training stack.
Founding Story
Tom Brown is a co-founder of Anthropic and was the lead author of the 2020 GPT-3 paper 'Language Models are Few-Shot Learners' at OpenAI, which showed that large language models can handle many tasks from a few examples without task-specific fine-tuning. He left OpenAI in 2021 to help found Anthropic, where he built much of the early training infrastructure behind Claude. (Exact birth year remains publicly undisclosed).
Sources
This profile does not yet cite a source specific to Tom Brown. 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)