Nvidia, the world’s most valuable publicly traded company, said on Monday that it would invest $100 billion in OpenAI, a deal that will allow the start-up behind ChatGPT to use the chipmaker’s artificial intelligence semiconductors inside its data centers.

The investment is the latest example of OpenAI raising money from the companies it relies on for products and services. Microsoft, which invested $10 billion in OpenAI in 2023, has made billions of dollars after the start-up paid it for computing power from its Azure data centers.

Nvidia invested in the start-up last year as well. During an appearance on CNBC on Monday, Jensen Huang, the chief executive of Nvidia, said his company would support the largest data center build out in history, which will result in the sale of four to five million Nvidia chips to OpenAI.

The investment is separate from OpenAI’s latest funding round, which has been led by the Japanese conglomerate SoftBank. That fund-raising effort could pump $40 billion into the A.I. start-up and value the company at $300 billion. Other investors include Microsoft, Thrive Capital, Coatue and Altimeter.

OpenAI is now in talks to sell $6 billion in shares owned by current and former employees. This sale would value the company at around $500 billion.

In January, OpenAI and its partners at SoftBank and the cloud computing giant Oracle joined President Trump in announcing that they would spend up to $500 billion on new data center infrastructure in the United States. As part of the plan, called Project Stargate, the companies have already erected a data center in Abilene, Texas, and intend to build additional facilities in other parts of the country.

(The Times sued OpenAI and Microsoft in 2023 for copyright infringement of news content related to A.I. systems. The two companies have denied those claims.)

This is a developing story. Check back for updates.