StepAudio 2.5 Realtime Voice Released with Paralinguistic Awareness and Persona Interaction

StepAudio 2.5实时语音发布：副语言感知与人格化交互

StepFun released StepAudio 2.5 Realtime with Chinese and English real-time voice support, API-based custom personas, more than 10,000 native persona options, millions of composable traits, and 5 built-in preset personas.

Why it matters: HKR-H/K/R all pass, but the source is an official X post and lacks latency, pricing, benchmarks, and rollout scope. This fits the low featured band for a mid-weight product update.