Mira Murati

Career Early career Murati interned in 2011 as a summer analyst at Goldman Sachs in Tokyo, Japan. She became chief technology officer (CTO) in May 2022. She led OpenAI's work on ChatGPT, DALL-E, Codex and Sora, while overseeing its research, product and safety teams. Murati worked on several of OpenAI's notable products, such as the Generative Pretrained Transformer (GPT) series of language models. During a June 2024 discussion at Dartmouth College's Thayer School of Engineering, Murati said some creative jobs may disappear, qualifying that such roles were questionable where the resulting content was of low quality. The remark drew criticism from writers and artists, including Dartmouth students. In October 2023, Murati was ranked 57th on Fortune 's list of "The 100 Most Powerful Women in Business of 2023".

In November 2023, Murati became the interim chief executive officer of OpenAI following the removal of Sam Altman from the job. She had collaborated with Ilya Sutskever, whose 52-page memo outlining concerns about Altman relied heavily on screenshots and information she provided, which contributed to the board's decision to oust him. Murati was replaced by Emmett Shear three days later, who left when Altman was reinstated five days later. Following these events, Murati returned to her role as CTO. In June 2024, Dartmouth College awarded Murati an honorary Doctor of Science.

In September 2024, Murati announced that she was stepping down as CTO to allow her the opportunity to "do my own exploration". This move came amid a wider executive exodus as OpenAI chief research officer Bob McGrew and a vice president of research, Barret Zoph, also announced their departures soon after.

Thinking Machines Lab In February 2025, Murati launched Thinking Machines Lab, a new public benefit corporation aiming "to make AI systems more widely understood, customizable, and generally capable". She was reported to have hired "a team of about 30 leading researchers and engineers from competitors including Meta, Mistral, and OpenAI." People involved with the startup include OpenAI co-founder John Schulman, and advisors Alec Radford and Bob McGrew.

In April 2025, Thinking Machines Lab reportedly aimed for a $2 billion seed round (requiring a minimum investment of $50 million). The round was led by Andreessen Horowitz and included participation from the government of Albania, valuing the company at $12 billion.

In October 2025, Thinking Machines Lab announced its first product, Tinker, a tool used to create custom frontier AI models.

Publications