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TSLA

TSMC joins TeraFab chip plant talks, Semi wins a 50-truck order from IMC, FSD v15 tied to 24-hour Robotaxi operation

Sources (7)

Three independent threads moved on the same day: chip supply (TSMC joins TeraFab, giving AI5 and AI6 a fallback on the strongest process), Semi demand (a 50-truck order from IMC, a leader in port drayage, including 34 trucks due before the end of the year), and a Robotaxi software milestone (FSD v15 rolls out this month and is tied to 24-hour operation).

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Each adds a notch of progress on a core test: the compute base for the four lines of FSD, Robotaxi, Optimus and Cybercab, Semi going from unveiling to real shippers queuing up, and whether vision-only can scale at night. But all three are previews, early-stage or small, and none is yet delivered.

Key evidence

  • TSMC has confirmed it is in talks with Musk's companies on cooperation for the TeraFab chip plant in Grimes County, Texas. The first phase is about $16.8 billion, and county filings show total investment across phases of $55 billion to $119 billion. The plant is positioned to make in-house chips for Tesla, xAI and SpaceX, including AI5 and AI6. Musk replied 'True' to a post about TSMC's involvement.
  • For the previous six months Intel had been the only named partner for TeraFab. After the news Intel fell by more than 4% at one point pre-market, a sign the market sees TSMC's involvement as a real upgrade in the quality of chip supply.
  • The project is led by SpaceX through TeraFab, and Tesla is not putting up the money directly. It is still early discussion ('in talks'). Musk's own words were 'something may come of it'. There is no signed agreement and no timetable, and the $55 billion to $119 billion is a multi-phase ceiling, not a present commitment.
  • IMC Logistics has ordered 50 Semis for drayage operations at California ports, 34 of which are promised for delivery before the end of 2026. Jim Gillis, president of IMC's Pacific region, confirmed this on X.
  • IMC is one of the largest drayage operators in North America. As a customer it is more credible than the early, small Einride order. Drayage (fixed short routes, recharging at the port) is the best use case for electric heavy trucks.
  • An order of 50 trucks is still small change against overall deliveries and gross margin, and Semi is already buried in the 'other models' line of 8,295 units in Q3, which was cut in half. Delivery of the 34 trucks by year-end depends on the ramp for a truck costing about $300,000 each, which Tesla itself has warned will be slow.
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  • Tesla has officially extended Robotaxi operations from the current hours to 11pm, with a further move towards 24-hour operation, and explicitly tied that to FSD v15, due out this month. This follows Musk's admission on 4 Oct that vision-only cannot see a grey cat lying on grey tarmac at night.
  • The fix is not to add lidar but to bet that the v15 software release improves low-light recognition and unlocks night operation. Software slips are the norm, and whether v15 truly solves recognition of low-contrast objects at night will have to wait for real-world testing.

Catalysts to watch

  • Progress in the TeraFab talks with TSMC, a signed agreement and a timetable
  • Foundry commitments for AI5 and AI6 (clarity on the three-way picture of Samsung, Intel and TSMC)
  • Actual delivery of the 34 Semis in the IMC order before the end of 2026
  • Follow-on Semi orders from more drayage, consumer-goods and logistics leaders
  • Whether FSD v15 rolls out this month as planned
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  • How FSD v15 performs in real-world recognition of low-contrast objects at night
  • The actual timeline for Robotaxi's move to 24-hour operation

Risks

  • TeraFab is still at the stage of early discussion, with no agreement and no timetable, and the goalposts can move at any time
  • TSLA is not the party building TeraFab, only a user of the chips, so its supply lock-in is weaker than if it built the plant itself
  • An order of 50 Semis is still small change against overall gross margin and deliveries, and in the Q3 report Semi is buried in the 'other models' line of 8,295 units, which was cut in half
  • At $300,000 a truck, the Semi ramp is slow, and Tesla itself has warned of this
  • Software slips on FSD v15 are the norm
  • If vision-only recognition at night cannot be solved, 24-hour Robotaxi operation cannot be unlocked, with a direct hit to asset utilisation per vehicle and to unit economics

Sources 7

  1. Culpium scoop, 2 Oct (TSMC joins TeraFab)
  2. Musk's own confirmation on X, 5 Oct (reply of 'True')
  3. Reuters, Motley Fool and DCD (multiple sources)
  4. Trucking Dive, Transport Topics and Teslarati, 5 Oct (IMC Semi order)
  5. Jim Gillis, president of IMC's Pacific region, confirmation on X
  6. Teslarati and Gadgets360, 5 Oct (FSD v15, 24-hour Robotaxi)
  7. Musk's own admission of the vision-only grey-cat recognition problem at night, 4 Oct

A brief is a lead for our research, not a verified conclusion or advice.