Tesla China released vehicle software version 2026.14.13 on July 31, a phased
update covering Model 3, Model Y, Model S and Model X. The main addition is
Doubao, a large-model in‑car voice assistant that provides real-time information
and natural, conversational responses, offers multiple premium voice options and
role-based personas (Know-it-all, Music Lover, Storyteller), and requires
activation of the premium in‑car entertainment service to use.