xAI Co-Founder Joins Secret Jeff Bezos Project. Here’s What We Know

The tech mogul is poaching to get ahead in the AI-sphere.

BY MOSES JEANFRANCOIS, NEWS WRITER @MOSESJEANS

Jeff Bezos. Illustration: Inc.; Photos: Getty Images; Adobe Stock

Poaching is the new way to get ahead in AI advancements. xAI co-founder Kyle Kosic is joining Jeff Bezos’ secretive start-up Project Prometheus. 

The new company, led by Bezos and former Google executive Vikram Bajaj, according to people familiar with the matter, is rapidly hiring to build industrial‑focused AI systems. The Financial Times reports the venture has recruited hundreds of employees across San Francisco, London, and Zurich, targeting engineers, AI researchers, and large‑scale infrastructure specialists. 

Kosic, who joined OpenAI in 2021 as technical staff, departed in 2023 for Elon Musk’s xAI, where he led infrastructure for its Colossus supercomputer. He later returned to OpenAI in 2024. 

Now, Kosic will continue to work on AI infrastructure projects, but at Prometheus.   

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The secret start-up founded by Jeff Bezos last year is pursuing AI capable of functioning in the physical world rather than simply processing language. The effort targets industrial uses and aims to develop models trained on domain‑specific data that can reason real‑world constraints, including the laws of physics. 

According to the Financial Times, the company has already “assembled the largest corpus of data on engineering” and how such systems work. 

Prometheus plans to stake in companies across multiple sectors, ranging from aviation to architecture, using those investments to access proprietary operational data that helps train and advance its AI systems. 

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