Elon Musk confirmed on October 3 that talks between TSMC and Terafab, the $16.8 billion chip venture backed by SpaceX and Tesla, are underway, writing on X: “Just discussions, but something may come of it.”
The confirmation followed an October 2 report by Bloomberg columnist Tim Culpan, published on his Culpium newsletter, that TSMC was exploring ways to work with Terafab to help the startup chipmaker run its planned semiconductor factories in Texas. Musk stopped short of announcing any deal, and no terms, timelines or investment commitments involving TSMC have been disclosed. TSMC itself has not confirmed the discussions.
What Terafab is
Terafab was announced by Musk on March 21, 2026, at an event at the Seaholm Power Plant in Austin. The venture aims to build a vertically integrated facility that produces more than one terawatt of artificial intelligence compute, a scale no current fab complex comes close to. Initial prototype operations are planned near Tesla’s Gigafactory Texas in Austin, with the full-scale plant earmarked for a former generating station site in Grimes County, Texas.
The project’s stated point of difference is consolidation. Logic chip manufacturing, memory modules, packaging, testing and mask production would all happen under one roof, instead of the distributed chain of foundries, packaging houses and memory specialists the industry relies on today. TechCrunch reported that SpaceX may spend as much as $119 billion on the project over time, with $16.8 billion set down to start construction.
In April 2026, Musk said Intel’s 14A process, a 1.4-nanometer node, would be used at the full-scale Terafab, arguing that by the time the plant scales up the process would be ready for heavy production volumes. Intel joined as a partner that month, which gave the venture foundry backing before any wafer had ever been produced on site.
Why TSMC would care
Culpan’s reporting described one possible model where Terafab becomes an anchor customer for a new TSMC factory in Texas, giving the Taiwanese foundry a guaranteed customer for the plant’s output while bringing its operating expertise into the project. A separate model has TSMC helping to run Terafab’s own factories. The report does not establish whether that would be the same site or a different facility.
TSMC already has reasons to look south. The company is weighing a separate multibillion-dollar Texas campus for additional AI chip capacity, according to Bloomberg, in a plan still at an early stage and distinct from the $265 billion in commitments TSMC has already made to its Arizona build-out. Musk confirmed talks with TSMC on October 3, hours after DIGITIMES first reported the exchange. Taiwan’s Ministry of Economic Affairs said this week it would support TSMC expanding investment in Taiwan, a signal the government is watching overseas expansion closely. Rumors that TSMC considered a new Singapore investment have also circulated this month.
The demand picture
The backdrop is a chip market running at full capacity. Nvidia’s market value touched a record $5.7 trillion. Broadcom raised its fiscal 2026 AI sales forecast to $58 billion and extended a $42 billion loan to Anthropic to keep the lab buying its infrastructure. AMD’s EPYC server CPUs are sold out through 2027. Memory makers including Micron and Samsung have warned that a memory shortage could last until 2028 as AI data centers consume more DRAM wafers than expected.
Equipment from ASML, Lam Research, KLA and Tokyo Electron takes years to deliver, which is why a new fab cannot appear quickly even when financing exists. Industry analysts have pointed out that a competitive wafer fab takes years to build from scratch, and that capital alone does not guarantee a working production line. Building a high-yield process requires yield learning that comes from running production, something Terafab has not yet done at scale.
What could get in the way
The project has drawn local opposition around Grimes County over AI infrastructure and power use. The reports do not say whether Terafab would make chips for its own AI, vehicle or robotics systems, serve outside customers, or do both. Musk said in October that the talks are just that, talks. Treating the TSMC angle as a done deal would jump ahead of the evidence.
Three open questions will decide whether the partnership moves past the exploratory stage. One is whether TSMC sees enough new demand to justify a separate Texas site on top of Arizona. Another is whether Terafab’s all-under-one-roof model actually works at high yields, since no fab complex has ever tried it at terawatt scale. The third is whether Intel, already a named partner on the 14A process, stays in the project or gets pushed aside if TSMC takes a larger role. None of the three has an answer yet.
Musk’s comment, that something may come of the discussions, is the most concrete public statement either side has made. Any real deal would likely involve operating support rather than a change in Terafab’s ownership, given Culpan’s description of the two models on the table. Until TSMC or Terafab put out a formal announcement, the Texas project stays where it has been since March: a very large plan with a very long list of steps still to prove out.