That lines up almost exactly with Musk’s estimates for the cost of Tesla’s Optimus robots, a line of humanoid robots that are being put to limited use by the company. While speaking at the automaker’s “We, Robot” event on Oct. 10, Musk said he expects Optimus to be sold for between $20,000 and $30,000 a piece in the “long term” once production is increased.

Tesla’s history with Optimus is shaky, going back to its infamous 2021 debut that showed off a person dancing in a costume.