Lab leader

Sam Altman

Sam Altman is OpenAI's CEO. He entered Y Combinator's first startup batch in 2005 and became its president in 2014. In 2015, he helped establish OpenAI with a group of founders and researchers. His later leadership included the laboratory's move to a capped-profit structure and the public release of ChatGPT, a product built by its teams. OpenAI's board removed him in November 2023, then announced his return with a new initial board. OpenAI Foundation now controls OpenAI Group, a public benefit corporation. His career connects startup support, research funding, product development, and decisions about how an AI company is governed.

Now at
OpenAI
Photo of Sam Altman

Timeline

  1. 2005

    A founder enters the first YC batch

    Altman is one of the founders in Y Combinator’s first startup batch.

  2. 2015

    Helping establish OpenAI

    OpenAI launches with Altman and Elon Musk as co-chairs, alongside researchers and engineers including Ilya Sutskever, Greg Brockman and John Schulman.

  3. 2022

    ChatGPT reaches the public

    OpenAI releases ChatGPT as a research preview.

  4. November 2023

    A return with a new board

    OpenAI announces Altman’s return as CEO and a new initial board chaired by Bret Taylor.

  5. 2025–today

    A new corporate form

    In October 2025, OpenAI recapitalized: the Foundation controls the Group public benefit corporation.

Sources and credits

Photo: 首相官邸ホームページ / Office of the Prime Minister of Japan Official Website. License: CC BY 4.0. Source: commons.wikimedia.org. Cropped to a square and resized. Ask us to remove or replace this photo.

  1. Y Combinator: Sam Altman for President, 21 February 2014 ycombinator.com. Checked 10 October 2026.
  2. OpenAI: founding announcement, 11 December 2015 openai.com. Checked 10 October 2026.
  3. OpenAI LP, 11 March 2019 openai.com. Checked 10 October 2026.
  4. OpenAI: Introducing ChatGPT, 30 November 2022 openai.com. Checked 10 October 2026.
  5. OpenAI: leadership transition, 17 November 2023 openai.com. Checked 10 October 2026.
  6. OpenAI: Altman returns, 29 November 2023 openai.com. Checked 10 October 2026.
  7. OpenAI: Our structure, current page openai.com. Checked 10 October 2026.