Tesla and SpaceX lead the project with Intel as manufacturing partner, building a fab on a confirmed Grimes County, Texas site to produce chips for SpaceX and Tesla Optimus, with reported filings putting phase-one cost near $16.8 billion and total spend up to $119 billion. Elon Musk has said output splits roughly 75% SpaceX and 25% Tesla, and pointed his X profile link to Terafab.ai in August 2026, raising the project's public visibility months after the original announcement.