Tesla Optimus Gen 3 Enters Mass Production Phase as Supply Chain Prepares for 100,000 Units Annually

Tesla has accelerated its Optimus humanoid robot program, mandating that suppliers prepare for a production capacity of 100,000 units annually by year-end. Following design iterations, the Gen 3 model is shifting from laboratory development to mass production.

According to supply chain sources, Tesla has issued specific procurement guidelines requiring suppliers to ramp up capacity to 1,000 units per week by September 2026, and further increase to 2,000–2,500 units per week by year-end. This trajectory supports parts supply for approximately 100,000 Optimus units annually.

CEO Elon Musk reviewed and approved the latest version of Optimus at an executive meeting in late June, signaling the Gen 3 model—in development for over three years—will finally transition from the laboratory into the mass production phase. Musk issued a clear mandate to the team: achieve production capacity targets by year-end or the entire procurement team will be replaced.

Optimus has iterated through three versions over the past six months: Alpha, Beta, and C. The new design adjusts actuators in the waist, hands, and neck, increases degrees of freedom, and uses more lightweight materials, enabling more dexterous operations.

Elon Musk, CEO of Tesla, stated:

"Production of Optimus will be extremely slow at first because it involves about 10,000 unique components and entirely new processes, meaning the technical complexity far exceeds that of automotive manufacturing."

In May 2026, Tesla halted production of Model S and Model X, retooling production lines at its Fremont, California, factory into a dedicated line for Optimus—a four-month process. Tesla is also building a new robot factory in Texas. Under Tesla's official plans, the production target for 2026 is 50,000–100,000 units, expected to increase to 500,000–1 million units in 2027.

Currently, Optimus is working in closed-loop processes such as dispensing, assembly, and transport within Tesla's factories. However, Tesla has not yet announced a clear external sales plan, meaning every Optimus unit is recorded as capital expenditure rather than revenue.

Supply chain sources remain cautiously optimistic, with one noting: "We cannot say Tesla is preparing to manufacture this many; we can only say Tesla is preparing to buy this many parts, and they might just buy them and pile them in the warehouse first."