Unraveling Threads at Thinking Machines Lab: Internal Strife and a High-Stakes Exodus
The world of high-stakes AI startups is rarely without its drama, and new reports shed light on significant internal challenges at Mira Murati’s Thinking Machines Lab. What began as an alleged personal matter involving a key co-founder has seemingly escalated into a broader talent drain, raising questions about the company’s stability amidst ambitious valuation targets.
The Core Controversy Unveiled: Allegations and Executive Fallout
Last summer, leaders at Thinking Machines Lab, a prominent name in the AI landscape, reportedly confronted co-founder and former Chief Technology Officer, Barret Zoph, regarding an alleged relationship with another employee. This incident, brought to light by WIRED, is understood to be the “misconduct” that has been alluded to in earlier media coverage.
Allegations and Internal Confrontation
Sources indicate that Mira Murati herself engaged Zoph in discussions about the alleged relationship. To safeguard the privacy of those involved, the employee’s identity remains undisclosed. This individual, who held a leadership position in a different department, is no longer affiliated with Thinking Machines Lab. The confrontation marks a pivotal moment, as the working relationship between the co-founders reportedly deteriorated significantly in the months following this discussion.
The Fallout: A Cofounder’s Departure
As internal tensions mounted, Barret Zoph began exploring opportunities outside of Thinking Machines. Before his eventual departure, Zoph was reportedly in discussions with leaders from Meta Superintelligence Labs. Ultimately, he was recruited by OpenAI, a move confirmed by OpenAI’s CEO of applications, Fidji Simo. Simo stated that Zoph’s hiring had been in progress for several weeks and notably expressed that OpenAI did not share Thinking Machines’ ethical concerns regarding Zoph. Both Zoph and OpenAI declined further comment on the matter.
A Talent Exodus and Shifting Loyalties in the AI Arena
Zoph’s exit appears to be just one piece of a larger puzzle, as Thinking Machines Lab experiences a notable exodus of key personnel, with several high-profile individuals transitioning to rival companies.
The Wider Brain Drain to Competitors
The departures extend beyond Zoph. This week alone, Luke Metz, another co-founder of Thinking Machines, along with at least three additional researchers, have also made the move to OpenAI. This follows an earlier high-profile departure in October, when co-founder Andrew Tulloch joined Meta. The pattern suggests a significant flow of talent from Murati’s startup to other major players in the competitive AI landscape.
Deeper Cracks: Beyond Personal Tensions
While the alleged personal conduct and subsequent breakdown of the co-founders’ relationship certainly played a role, they do not fully account for the broader wave of resignations sweeping through Thinking Machines Lab.
Reports previously highlighted a fundamental misalignment within the startup regarding its strategic direction and the type of product it should be developing. This internal divergence on core objectives likely contributes to the current instability, suggesting deeper foundational issues at play.
Amidst these internal challenges, the startup was reportedly aiming to secure capital at a staggering $50 billion valuation in November, a substantial increase from its current $12 billion valuation. This ambitious financial goal, set against a backdrop of executive conflict and talent departures, paints a complex picture for Thinking Machines Lab as it navigates a rapidly evolving and intensely competitive industry. Thinking Machines Lab declined to comment on these developments.

