In a surprising turn of events, the Thinking Machines Lab is facing a significant challenge as two of its cofounders are set to return to OpenAI. This development has already sparked various interpretations and discussions regarding the circumstances behind this transition.
On January 14, 2026, OpenAI announced the departure of Barret Zoph and Luke Metz from Thinking Machines Lab through a memo shared by Fidji Simo, who serves as the CEO of applications at OpenAI. The exit was first highlighted by technology journalist Kylie Robison on X (formerly known as Twitter), who reported that Zoph had been terminated due to allegations of “unethical conduct.”
Sources close to the situation have indicated that Zoph may have disclosed sensitive information belonging to Thinking Machines to rival companies. However, attempts to reach Zoph for clarification were unsuccessful, as he did not respond to inquiries from WIRED in a timely manner.
According to Simo's memo, Zoph had communicated his intentions to leave to Thinking Machines’ CEO, Mira Murati, just days prior, but was officially let go shortly after. Notably, Simo mentioned that OpenAI does not share the same apprehensions regarding Zoph as Murati does, suggesting a potential divide in perspectives between the two organizations.
This personnel shift represents a strategic advantage for OpenAI, particularly following the recent departure of Jerry Tworek, their VP of research. Additionally, reports suggest that another member of the Thinking Machines Lab team, Sam Schoenholz, is also set to rejoin OpenAI, further emphasizing the trends within these top AI firms.
Zoph and Metz had initially left OpenAI in late 2024 to help establish Thinking Machines alongside Murati, who previously held the position of chief technology officer at OpenAI, underscoring the interconnected nature of these companies in the evolving tech landscape.
As this story continues to unfold, it raises intriguing questions about corporate ethics, competition in the AI sector, and the implications of leadership changes. Keep watching for updates on this developing narrative.
