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Tesla Tapes Out AI5 as Terafab Effort Accelerates

Supplier outreach plus Taiwan recruiting signal a long, costly push toward in-house chip capacity on a multi-year timeline.

Overview

  • Tesla finalized its AI5 chip design on Wednesday, sending it to TSMC and Samsung for fabrication with first test silicon expected later in 2026.
  • Musk said early AI5 use will center on Optimus robots and Tesla supercomputer clusters, with vehicles staying on the current AI4 hardware for now.
  • Terafab teams have asked Applied Materials, Tokyo Electron, and Lam Research for prices and delivery dates on fab tools as they target a pilot line by 2029.
  • Tesla posted nine Taiwan jobs for Terafab that seek experience in sub‑7 nm and 2 nm-class processes and advanced packaging such as CoWoS and SoIC.
  • TSMC’s CC Wei cautioned that building and ramping a modern foundry takes about five years, signaling long lead times even with an aggressive schedule.