Barret Zoph, a co-founder of the AI startup Thinking Machines who briefly rejoined OpenAI earlier this year, has landed at Google as vice president of research. A Google spokesperson confirmed the move to the Wall Street Journal, saying, “We look forward to Barret returning to Google and bringing his RL and post-training expertise to Gemini.”
Zoph’s career has followed a winding path through the AI industry’s top labs. He spent two years at OpenAI before leaving in October 2024 to co-found Thinking Machines with Mira Murati, who had departed OpenAI the month prior. In January 2026, Zoph and fellow co-founder Luke Metz dramatically left the startup to return to OpenAI. That return lasted only five months, with Zoph departing in June after heading AI enterprise sales.
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A familiar face in a new role
Zoph is no stranger to Google — he previously worked at the company before joining OpenAI. His return marks another chapter in the increasingly common revolving door between major AI players. At Google, he will focus on reinforcement learning and post-training methods, areas critical to advancing the Gemini model family.
The move underscores Google’s aggressive push to attract top AI talent, even as it competes with OpenAI, Anthropic, and a host of startups. For Zoph, it represents a return to a research-focused role after a brief foray into enterprise sales at OpenAI.
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High turnover at OpenAI continues
Zoph’s departure is part of a broader pattern of executive churn at OpenAI. Over the past eight months, the company has lost its COO and a top data center executive, among others. This turnover comes despite OpenAI preparing for an IPO and maintaining its status as one of the most influential companies in tech.
The reasons for the exodus remain unclear, but industry observers point to the intense pressure and rapid scaling at AI labs, as well as fierce competition for talent. For Google, hiring someone with Zoph’s experience in both frontier AI research and startup leadership could provide a strategic edge in the race to develop more capable models.
What this means for the AI talent wars
The musical chairs of AI executives reflects a broader trend: the industry’s most skilled researchers and leaders are in high demand, and loyalty to any single company is often short-lived. For readers, this churn can affect product roadmaps, innovation timelines, and even the direction of AI safety research.
Zoph’s move to Google also signals that the company is willing to bring back former employees who have gained experience elsewhere. This strategy can help Google absorb new ideas and techniques from competitors, potentially accelerating its Gemini development.
As the AI industry continues to evolve, the movement of key figures like Zoph will remain a closely watched indicator of where the next breakthroughs may come from. For now, all eyes are on how his expertise will shape Google’s AI efforts in the coming months.
This article is for informational purposes only and does not constitute financial or investment advice. The cryptocurrency and AI markets are highly volatile; readers should conduct their own research before making any decisions.
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