Tesla owners can now talk to their cars and, for the first time, have the car actually understand what they’re saying in a meaningful way. The company has rolled out hands-free voice activation for Grok, xAI’s conversational AI assistant, letting drivers start a chat by simply saying “Hey Grok” and end it with “Goodbye.”

What Grok actually does inside a Tesla

The integration arrived via Tesla’s software update 2025.26, which brought Grok to vehicles equipped with AMD Ryzen-based infotainment systems. That’s the newer hardware generation, so older Model S and Model X units running Intel Atom chips are out of luck for now.

Activation works two ways. You can use the “Hey Grok” wake phrase, hands-free, or do a long press on the steering wheel’s microphone button. Both methods launch Grok’s conversational interface, which stays active until you say “Goodbye” or it times out.

Once active, Grok handles a range of tasks that go well beyond the typical voice assistant playbook. Drivers can ask natural-language questions, request navigation to specific destinations using conversational phrasing, get media suggestions, and even choose from customized AI personalities.

The full feature set does come with a catch. Grok’s complete functionality requires either Tesla’s Premium Connectivity subscription or an active Wi-Fi connection. There’s a guest mode that offers limited queries, but the robust conversational experience, including real-time information lookups, needs that persistent data link.

The xAI and Tesla ecosystem tightens

Grok is built by xAI, the artificial intelligence company founded by Elon Musk in 2023. Its integration into Tesla vehicles is the most visible example yet of how Musk’s various companies are beginning to share infrastructure and technology in ways that create a mutually reinforcing ecosystem.