<ul data-eligibleForWebStory="true">Elon Musk teases progress on Tesla's humanoid robot, Optimus, confirming it uses Grok voice assistant.Optimus V3 is already integrated with the Grok voice AI, enhancing its ability to interact with users and the environment.Current Optimus version features Tesla-designed actuators, improved limb control, and more human-like proportions.Demo videos show Optimus walking unassisted, balancing, and performing tasks in Tesla factories.Musk hints at Optimus having upgraded hands with 22 degrees of freedom, similar to a human hand.During a meeting, Musk mentioned Tesla aiming to produce around 5,000 Optimus robots this year.