- Appearance: Gen 1 has a white and black color scheme, with a screen on its head that displays a face. Gen 2 has a sleeker and futuristic design, with a silver and blue color scheme, and a transparent visor on its head that shows its eyes. Gen 2 also has more visible joints and wires than Gen 1.
- Size and weight: Gen 1 is 5 ft 8 in (173 cm) tall and weighs 125 lb (57 kg). Gen 2 is slightly taller and heavier, at 5 ft 10 in (178 cm) and 130 lb (59 kg).
- Capabilities: Gen 1 can walk, wave, and dance on stage, but has limited mobility and dexterity. Gen 2 can move its arms, hands, and fingers more freely, and can also sort colored blocks, locate its limbs in space, and maintain a yoga pose. Both versions are controlled by the same AI system that Tesla uses for its cars, and have a carrying capacity of 45 lb (20 kg).
- Status: Gen 1 is a proof-of-concept prototype that was first shown at Tesla's AI Day event in September 2022. Gen 2 is a semi-functional prototype that was displayed at Tesla's second AI Day event in September 2023. Tesla hopes to have a production-ready version of Optimus by 2024.
It's important to note that Gen 2 is still under development, and the final specifications and capabilities may differ from what has been announced so far. However, the improvements over Gen 1 are significant and represent a major step forward in humanoid robotics.

