Elon Musk told Tesla's second-quarter earnings call that Optimus, the company's humanoid robot, will be its biggest product ever, repeating almost word for word a claim he first made a quarter earlier, a level of consistency Serenity flags as rare for Musk on a topic this speculative. Beyond the robot itself, the call surfaced supply chain detail investors track less closely. Karn Budhiraj, Tesla's VP of supply chain, said the company is directing the same intensity of investment into memory chips and new components like metal-injection-molded parts and flexible printed circuits, building entirely new supplier relationships from scratch to support Optimus production. Musk separately thanked Micron for setting aside a meaningful memory allocation for Tesla on reasonable terms, notable given how tight and expensive memory pricing has become industry-wide this year, and credited Panasonic, Samsung, and TSMC as battery and chip partners. Older investor slides show Fremont's Optimus capacity target at 1 million units and Giga Texas at 10 million, implying Tesla sees itself as the clear scale leader if the ramp materializes. Musk's track record on timing is mixed, but Serenity notes his directional calls, on EVs and space, have historically been right even when the dates slipped.
Why it matters · If Musk's Optimus conviction holds, it reshapes Tesla's long-term valuation case beyond cars, and it quietly names which suppliers, from Micron to Panasonic, ride along.
Worth asking · Elon Musk has now repeated, across two straight earnings calls, that Optimus will be Tesla's biggest product ever. Is that conviction worth pricing in before the humanoid robot has meaningful revenue, or is it another Musk timeline that slips?