AI Lab Shake-up: Thinking Machines Cofounders Return to OpenAI (2026)

A major shift in the AI world is underway! The departure of two cofounders from Thinking Machines Lab to return to OpenAI, the creators of ChatGPT, has sent ripples through the industry. This unexpected move raises eyebrows and sparks immediate speculation about the future of both companies.

On Thursday, OpenAI announced that Barret Zoph and Luke Metz, cofounders of the relatively new AI lab Thinking Machines, would be rejoining their ranks. This news, shared in an internal memo by OpenAI's CEO of applications, Fidji Simo, marks a significant moment in the competitive landscape of artificial intelligence.

The story took an even more intriguing turn when technology reporter Kylie Robison first reported on X that Zoph's departure from Thinking Machines was due to "unethical conduct." But here's where it gets controversial... A source close to Thinking Machines alleged that Zoph had shared confidential company information with competitors. However, WIRED was unable to independently verify this claim, as Zoph did not immediately respond to requests for comment.

Adding to the intrigue, the memo from Simo revealed that Zoph informed Thinking Machines CEO Mira Murati on Monday of his intention to leave, and was subsequently fired. Interestingly, Simo's memo also stated that OpenAI doesn't share Murati's concerns about Zoph. This discrepancy is certainly something to ponder.

This personnel change is undoubtedly a win for OpenAI, especially considering they recently lost their VP of research, Jerry Tworek. Furthermore, another Thinking Machines Lab staffer, Sam Schoenholz, is also returning to OpenAI, according to the source.

Zoph and Metz initially left OpenAI in late 2024 to launch Thinking Machines alongside Murati, who had previously served as the ChatGPT-maker's chief technology officer. This history adds another layer to the story, highlighting the interconnectedness and fluidity of talent within the AI sector.

This is a developing story, and more details are expected to emerge. What do you think about the implications of these moves? Do you believe the allegations against Zoph are credible? Share your thoughts in the comments below!

AI Lab Shake-up: Thinking Machines Cofounders Return to OpenAI (2026)
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