Tesla's Fremont factory now builds several hundred Optimus humanoid robot units a week, about ten times its Q2 2026 pace, according to Automotive Manufacturing Solutions. Internal targets reportedly call for more than 1,000 units a week by year-end and close to 20,000 a week over the long term. Production runs on former Model S and Model X lines. Each robot reportedly contains more than 10,000 unique parts that have never been mass-produced.
On April 13, 2018, Musk admitted that excessive automation at Tesla was a mistake, his own, and wrote that humans are underrated. The Model 3's production hell saw just 260 vehicles produced in Q3 2017, far below weekly targets of 2,500 and 5,000. Tesla paused production in April 2018 to address bottlenecks. Musk later said too much new technology had gone in at once when it should have been staged.
The Model 3 line depended on one tightly coupled conveyor system, so a failure anywhere could stall the entire line. The Optimus line instead uses several parallel sub-assembly line segments, so a bottleneck in one does not necessarily halt the rest. The ramp has also been gradual, roughly tenfold since Q2 2026. The overall ambition, though, is much larger than in 2018.
According to af.net, Tesla plans to begin Optimus production at Gigafactory Texas in late 2026, on a line designed for 10 million robots a year. The first output will go to Tesla's own factories, with commercial availability targeted for 2027. That staggered timeline gives Tesla room to fix manufacturing problems before outside customers rely on supply, unlike the Model 3, which took deposits years before the line could deliver.
More than 1,000 Optimus units reportedly work in Tesla factories on supervised tasks such as sorting battery cells, but they still struggle outside their training. Musk told investors the units are mainly for learning and data collection. Some workers have reportedly resisted training robots that could replace them. Investors see Optimus as a major valuation driver, but current output is still far below the 1,000-unit weekly goal.
Tesla is applying its vertical integration in car manufacturing to robots, which pits Optimus against vehicle programs for factory space and engineering attention. Tesla's gigacasting playbook has influenced rivals such as Toyota, and robotics is now its next automation frontier. AI-driven chip and memory shortages add sourcing risk. The key test is whether human supervision continues as volume targets climb.