Mira Murati founded Thinking Machines Lab in February 2025 and serves as CEO, after leaving her role as chief technology officer at OpenAI in September 2024. She briefly served as OpenAI's interim CEO for three days in November 2023 during the board crisis that temporarily removed Sam Altman.
At OpenAI, Murati oversaw the research, product, and safety teams behind ChatGPT, DALL-E, Codex, and Sora. Under her leadership, Thinking Machines Lab raised $2 billion at a $12 billion valuation and shipped its first product, Tinker, an API for distributed large language model fine-tuning.