The article reports that brain computer implants (BCIs) are reaching adulthood. Three BCI trends to watch in 2026 are better ways to capture brain signals, brain implants for mental health, and Chinese competition. These trends represent key areas of development for BCI technology. Better ways of capturing brain signals will improve the accuracy and reliability of implants. Brain implants for mental health target the treatment of disorders such as depression or anxiety. Chinese competition is increasing the global pressure for innovation in this field.