Barret Zoph, the head of enterprise AI sales at OpenAI, has departed the company once again, just five months after returning. The news was confirmed by OpenAI, and Zoph posted a goodbye message in the company's internal Slack channels.
Zoph originally left OpenAI in the fall of 2024 to join Mira Murati's competing AI startup, Thinking Machines Lab, as its CTO and co-founder. However, his tenure there was short-lived. In January 2026, Thinking Machines Lab announced that it had parted ways with Zoph following reports of alleged misconduct involving an undisclosed relationship with a colleague. Murati posted on X that Zoph would be replaced as CTO.
Shortly after that departure, Zoph returned to OpenAI in mid-January 2026, along with two other former Thinking Machines Lab employees, Luke Metz and Sam Schoenholz. Fidji Simo, OpenAI's CEO of Applications, welcomed them back, noting that the decision had been in the works for several weeks. At the time, OpenAI said Zoph would lead its push into enterprise — a significant role as the company vowed to stop chasing "side quests" and focus on key revenue drivers like enterprise and coding ahead of its planned IPO.
Now, just five months later, Zoph is out again. The reasons for his latest departure have not been disclosed, but it adds to a pattern of high-profile exits and returns at OpenAI, a company that has seen significant leadership turmoil over the past few years.
Zoph's career in AI began after he earned a PhD in computer science from Stanford University, where he focused on neural architecture search and reinforcement learning. He joined OpenAI in its early days and contributed to several key projects, including the development of GPT-3. His expertise in scaling AI models and building enterprise solutions made him a valuable asset to the company.
When Zoph left OpenAI in 2024, it was part of a mass exodus following Mira Murati's departure. Murati, who briefly served as CEO during Sam Altman's temporary ouster in November 2023, left OpenAI in September 2024 to start Thinking Machines Lab. Several employees followed her, including Zoph, Luke Metz, and Sam Schoenholz. The new startup aimed to build competitive AI systems, but soon faced internal challenges.
Allegations of misconduct against Zoph surfaced in late 2025, leading to his removal from Thinking Machines Lab in January 2026. Murati publicly stated that the company had "parted ways" with Zoph, though she did not provide further details. Zoph has not publicly responded to the allegations.
His return to OpenAI was seen as a strategic move to bolster the company's enterprise sales efforts. OpenAI has been aggressively expanding its business offerings, including ChatGPT Enterprise and API services for businesses. The company has also been preparing for an IPO, which is expected to be one of the largest in tech history. Enterprise revenue is a critical component of that valuation.
However, Zoph's latest departure raises questions about OpenAI's ability to retain top talent in the competitive AI landscape. The company has seen a revolving door of executives, including the departures of several key researchers and engineers to startups and competitors. Despite this, OpenAI continues to dominate the AI market, with its GPT models and ChatGPT leading in adoption.
Analysts suggest that Zoph's departure may not significantly impact OpenAI's immediate operations, as the enterprise sales team remains robust under other leaders. However, it adds to the narrative of instability at the highest levels of the company. Meanwhile, Thinking Machines Lab continues to operate under Murati's leadership, though it has yet to release a major product.
Zoph's future plans are unknown. He may return to a research role, start his own venture, or join another AI firm. Given his track record and expertise, he is likely to have multiple options in the thriving AI sector.
The AI industry is closely watching these developments, as talent mobility remains high. With both established companies like OpenAI and new startups vying for expertise, the competition for skilled professionals is intense. Zoph's story illustrates the fluidity of leadership in this rapidly evolving field.
As OpenAI moves forward, its focus on enterprise will continue under new leadership. The company has emphasized the importance of building reliable, secure AI solutions for businesses, and its enterprise customer base has grown significantly. The company's upcoming IPO will test investor confidence, and any leadership changes could impact sentiment.
Ultimately, Zoph's exit is another chapter in the ongoing saga of AI talent wars. Whether he returns to OpenAI for a third time or stays elsewhere, his career remains a testament to the dynamic and sometimes turbulent nature of the industry.
Source: The Verge News