StepFun Releases StepAudio 2.5 Realtime: An End-to-End Voice Model with Roleplay-Specific RLHF and Paralinguistic Comprehension
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StepFun, the Shanghai-based AI lab, released StepAudio 2. 5 Realtime in May 2026 — an end-to-end real-time speech large language model with fully customizable persona capabilities.
The model connects via a WebSocket API, supports Chinese and English, and ranked first across all five benchmark dimensions tested in April 2026, including an 80. 41 human evaluation score and 82. 18 on paralinguistic comprehension. The post StepFun Releases StepAudio 2.
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Original source: MarkTechPost