ViduS1 API
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Introduction
Vidu S1 API enables real-time interactive AI digital humans with streaming video, 50+ voices, and 28 languages.
Listed on
July 23, 2026
What is ViduS1 API?
Vidu S1 API is a commercial-grade streaming video generation model for building real-time interactive digital humans. It enables live, bidirectional voice and video conversations where the AI character sees and hears the user, perceives emotion, and responds in quasi real time. Unlike pre-rendered avatars, it generates video on the fly, supporting unlimited interaction duration without quality loss.
How to use ViduS1 API?
- Integrate the Vidu S1 API in 6 steps: 1) Create a session via HTTP POST with persona, avatar image, and voice; 2) Join the AliRTC channel and publish user's audio/video; 3) Open a WebSocket for control signaling; 4) Stream audio/video through AliRTC; 5) Manage session lifecycle; 6) Use the playground to test and get API key.
Core features of ViduS1 API
- Streaming video generation for real-time interactive digital humans
- Bidirectional voice and video conversation with user perception
- Unlimited interaction duration (1 minute to 2 hours) without quality loss
- 50+ preset voices and 28 languages supported
- Persona customization with short-term memory
- Multimodal perception (voice, text, video input)
- High-resolution output for consumer-facing products
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