What is Optimus?

Optimus is Tesla's general purpose humanoid robot, a two-legged machine about the height of an average adult, built to take on work that is unsafe, repetitive, or boring for people. It stands roughly 173 centimeters tall (5 feet 8 inches), and it is designed to go from the factory floor to household chores using the same artificial intelligence (AI) that drives Tesla's cars. Tesla shut down its Model S and Model X lines in Fremont in 2026 to make room for it.

The Robot

Optimus, also called the Tesla Bot, is a walking robot with arms, hands, and a head, meant to handle many kinds of work rather than one job. Elon first showed it on August 19, 2021, at Tesla's first AI Day, where a dancer in a white robot suit previewed the concept onstage. The first working prototype arrived a year later, and the design has since moved toward a body that can grab, balance, and carry.

Why Optimus Exists

The pitch starts with people. Aging populations and shrinking workforces leave a lot of jobs no one wants to do, and Elon frames Optimus as the answer. The deeper reason is that Tesla already builds the hardest parts of a robot for its cars, so reusing that work to make a walking machine lets one advance pay for the next. Free people from the dull and dangerous jobs, the argument goes, and you reach what Elon calls "sustainable abundance."

How it Works

Optimus runs on the same kind of AI as Tesla's Full Self-Driving (FSD) system: end-to-end neural networks, software that turns raw camera input straight into action with no hand-written rules in between, plus vision-based sensing for walking, balance, and grabbing. The same approach that watches a highway now watches a workbench.

Degrees of freedom (DoF) is the number of separate ways a hand's joints can move: the Gen 2 hand had 11, and the next-generation hand Tesla showed in 2024 has 22. Doubling that count turns a simple gripper into something much closer to a real hand.

That extra range of motion is what lets a robot pick up an egg without crushing it. In October 2025 Tesla posted video of Optimus practicing kung fu with a human partner, and Elon said the robot's own AI drove the moves rather than a remote operator. Elon said in April 2026 that Tesla's next chip, AI5, will go into Optimus and Tesla's data centers before its cars, with volume production hoped for in 2027.

The Economics of Optimus

The plan is to build a lot of them cheaply. Tesla's first Optimus line in Fremont is designed for 1 million robots a year, a second line planned for Gigafactory Texas is being designed for 10 million, and the long-run goal is a build cost under $30,000 per robot.

Current Status of Optimus

Tesla built its last Model S and Model X in May 2026, and its Q3 2026 update said Optimus production began in Fremont on its high-volume lines. The bots coming off this line are the first production-quality bots Tesla has manufactured. The first robots off the line will go to Tesla's Optimus Academy, where they collect training data. As of the Q3 2026 update Tesla was still keeping these robots for its own use, with sales to the public targeted by the end of 2027. When Tesla announced the robot in August 2021, it set targets of a 68 kilogram (150 pound) deadlift and a 20 kilogram (about 45 pound) carry.

The gap between the two targets reflects the hard part of a walking robot, which is keeping its balance under a load.

What Comes Next

In December 2025 Tesla rewrote its mission around building "a world of amazing abundance," tying the company's story to the robot. Tesla first targeted an unveil of Optimus Gen 3, its first design meant for mass production, in the first quarter of 2026. On March 31 Elon said it could move and was getting finishing touches before its public showing. Elon has also said Optimus could one day outperform the best human surgeons.

The Bottom Line

Optimus is a project where the prototype, the factory, and the story of what Tesla could be worth are being built at the same time, and the prototype is already walking. The first robots from the Fremont line, due later in 2026, will show how close Tesla is to building them at volume.