Tesla will retire Model S and X lines in Fremont for an Optimus line designed for 1 million robots a year, and plans a 10 million-unit line in Texas

Tesla has moved Optimus from keynote demonstrations to its factory plan. The decision to replace Model S and Model X lines with a robot line is a real opportunity cost, since those vehicles still generate revenue, and it ties the humanoid programme to a specific building, a specific capacity and a specific quarter. That makes Optimus auditable in a way it was not before.

For the wider industry the figures reset the reference point for scale. Start-ups talk about thousands of units; Tesla is designing for a million in its first line. Even if actual output is a fraction of that, suppliers of actuators, reducers, sensors and cells will plan around Tesla's numbers, which affects pricing and allocation for every other humanoid maker.

Figure AI is the most aggressive start-up on manufacturing, reporting a one-robot-per-hour rate at BotQ and more than 350 Figure 03 units delivered by the end of April. 1X has a 10,000-unit factory in Hayward aimed at homes, and Agility a 10,000-unit plant aimed at logistics. Boston Dynamics builds Atlas with Hyundai as both owner and customer. None of them has a captive vehicle business to fund the ramp.

Tesla's disadvantage is disclosure. Rivals name customers and deployments; Tesla's update named none for Optimus. Until outside buyers appear, the comparison is between Tesla's planned capacity and competitors' demonstrated commercial use.

Tesla does not break out Optimus spending. First-quarter capex of $2.49 billion covers vehicles, energy, AI compute and robots together, so the robot investment cannot be isolated from the update. What can be said is that the company ended March with $44.74 billion in cash and investments, about 72 times Agility's expected $620 million SPAC proceeds (formula 44.74 / 0.62).

That cash cushion means Optimus does not need outside funding, but it also means its economics will stay hidden inside consolidated results unless Tesla chooses to report robot revenue or units separately.

The update did not name Optimus suppliers. A 1 million-unit line would require tens of millions of precision actuators, reducers and motors a year, which is far beyond today's humanoid supply base. Tesla's practice in vehicles has been to bring critical components in-house, and the update's emphasis on its own lines suggests a similar approach for core actuators and battery packs.

For component makers in Asia and Europe, the Texas design figure of 10 million robots matters more than the Fremont line. Suppliers will need firm orders, not design capacities, before building plants of that scale, so the first purchase commitments Tesla places will be a better guide than the headline numbers.

The second-quarter update in July should confirm whether large-scale Optimus factory preparation began in Q2 as promised, and whether Tesla gives any count of robots built or deployed in its own plants.

The end of Model S and Model X production in Fremont is another hard marker. Finally, watch for the first external Optimus customer, price or delivery date, which would move the programme from internal use to commercial product.

Thesis. Optimus has become a funded industrial programme with dated milestones, but its value depends on demand Tesla has not yet shown.

Confidence is medium. The capacity statements, factory locations and financial strength are confirmed in Tesla's own update, which supports the view that the company will build lines. Confidence is limited by the absence of customers, prices and unit counts, and by Tesla's history of late volume ramps. External orders would raise it to high.

How many Optimus robots did Tesla build in the first quarter, and how many work inside its own factories?

When will Model S and Model X production end, and what happens to the vehicles' remaining order book?

Which actuators and hand components will Tesla make in-house, and which will it buy?