Neuralink has demonstrated new features that let people with severe speech impairment make phone calls, give commands to a Grok AI agent, and dictate text on an iPhone using brain signals. The demonstration used a participant in its VOICE clinical study, which focuses on people who have lost the ability to speak. The implant translates the neural signals linked to intended speech into words.

The most cyberpunk detail is the trigger. The participant imagines saying "Hey Neuralink", followed by a command, and the Grok agent carries out the task on a computer by itself. A new voice activity detection system also starts and stops decoding when he tries to speak, so no button press is needed. For phone calls, the system sends synthesized speech into the iPhone's microphone stream, so the other person hears a generated voice. In testing, he used it to talk to his wife, and Neuralink said the couple's relationship began with phone conversations.

Engineers developed these improvements in a 72-hour sprint at the participant's home, testing prototypes with him and his wife as they went. Other additions include an iOS keyboard for neural dictation, faster text correction in the Bloom app, and speech from the lock screen without unlocking the phone. The catch: Neuralink gave no numbers for decoding accuracy or response time, and its implants remain investigational, without FDA approval.

Why it matters: Brain-computer interfaces are moving from lab tests to daily tasks like calls and messages, but until Neuralink publishes performance data, this is a convincing demo, not a measured result.