(Reuters) -OpenAI and Oracle will develop another 4.5 gigawatts of data center capacity, expanding a tie-up that has promised hundreds of billions of dollars in infrastructure investment to keep the U.

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.

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.