OpenAI Chief Executive Officer Sam Altman’s plans for a massive buildout of the machinery and systems needed for artificial intelligence are coming into clearer focus, beginning with an effort in US states slated to costs tens of billions of dollars, according to a person familiar with the matter. Altman had spent the early part of the year seeking the US government’s blessing for the project, which aims to form a coalition of global investors to fund the costly physical infrastructure needed to support rapid AI development, Bloomberg reported in February. Now, Altman and his team are working on several details that haven’t previously been reported, including the plan to first target US states.