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.

Just over a year ago, Altman broke into the clay and sand of Abilene, Texas, to begin building the biggest data center in the world. The Stargate campus, when completed, would be about 60 acres larger than New York City’s Central Park. Construction of the campus’ first two buildings is scheduled to finish this summer.

The latest agreement between OpenAI and Oracle will expand Stargate’s data center capacity, ultimately surpassing the halfway point of their goal.

OpenAI and Oracle still have to build this monster data center, which will be a costly endeavor, both in cash and in energy. They ar