OpenAI was the company that signed a $30 billion per year deal with Oracle for data center services, disclosed last month, The Wall Street Journal reported on Monday. Now, OpenAI CEO Sam Altman has confirmed the details of the contract (but not the dollar amount) in an X post on Tuesday and in a company blog post.

In addition to the 4.5 gigawatts of capacity announced today, Oracle is responsible for building one of OpenAI’s Texas data center campuses. The site is expected to house up to 400,000 of Nvidia Corp.’s GB200 Grace Blackwell accelerators. Each chip features two Blackwell B200 graphics cards and a 72-core Grace central processing unit.

The Wall Street Journal reported today that OpenAI and Softbank have not been able to agree on key issues regarding the partnership, including where to build the new sites. The group is now aiming to open a single, smaller data center, likely in Ohio, by the end of the year, according to sources familiar with the matter.