Nvidia in Talks to Back OpenAI with $250 Billion Guarantee and Data Center Lease

In late July 2026, Nvidia is negotiating a massive $250 billion guarantee to back OpenAI's lease of a $500 billion data center, according to multiple reports. The deal would make Nvidia a key financial backer of OpenAI's infrastructure expansion, alongside SoftBank's $40 billion loan for an OpenAI stake, which has attracted 21 new lenders. Nvidia is also investing $1 billion in Naver's AI project in Korea and $5 billion in Ilya Sutskever's AI startup. These moves have reignited concerns about a potential AI investment bubble, as Nvidia's total commitments could exceed $750 billion.