ABILENE, Texas (AP) — The afternoon sun was so hot that OpenAI CEO Sam Altman traded his usual sweater for a T-shirt on the last legs of a Tuesday visit to the massive Stargate artificial intelligence data center complex that will power the future of ChatGPT. Stargate, a joint venture between OpenAI, Oracle and Softbank, said it is building two more data center complexes in Texas, one in New Mexico, one in Ohio and another in a Midwest location it hasn't yet disclosed. The complex will require about 900 megawatts of electricity to power the eight buildings, running hundreds of thousands of specialized AI chips. OpenAI and Oracle invited media and politicians, including U.S. Sen. Ted Cruz, a Texas Republican, to tour the site for the first time Tuesday. Originally developed to mine cryptocurrency, developers pivoted and expanded their designs to tailor the project to the AI boom sparked by ChatGPT.