Tesla and SpaceX Team Up on Terafab to Build Their Own AI Chips in Texas

Tesla and SpaceX are done buying chips from someone else. The two companies are building Terafab, a joint semiconductor operation in Texas, announced by Elon Musk on March 21, 2026, according to Crypto Briefing. First up: a research fab at Tesla's Giga Texas campus in Austin, estimated at $3 billion, with construction already underway since April 2026.

That Austin site is built for speed, not volume. It's a rapid prototyping shop meant to test fresh chip designs fast, so the companies can find out what works before betting on mass production. The real monster comes next: a main production plant in Grimes County, Texas, carrying an initial $16.8 billion investment and more than 100 million square feet of planned operational space.

The payoff is control. Tesla wants chips tuned specifically for its self-driving software, robotaxis and Optimus humanoid robots, plus its Cybercabs. SpaceX has its own hunger for AI hardware, feeding planned space-based data centers. Sharing infrastructure lets both companies spread the eye-watering cost across more products. The long-term target is 1 terawatt of annual AI compute capacity.

Intel jumped in as foundry partner on April 7, 2026, targeting its 14A process node. For Intel, landing Tesla and SpaceX is a loud, public win for a node it needs the world to notice. For Texas, the project promises at least 3,000 jobs between Grimes County and the Austin research site, deepening the state's grip on advanced manufacturing.

Hold the confetti, though. Those dollar figures are estimates and initial commitments, and chip fab projects have a well-earned reputation for blowing timelines and budgets. The 1 terawatt ambition is a long-term target too, not something arriving on a near-term schedule.