ViduS1 API

Unknown

• Updated Jul 6, 2026, 03:09 AM

Vidu S1 API is a streaming video generation service that enables developers to build real-time interactive digital humans.

Use Cases ▼

AI companions

Live-commerce hosts

Virtual customer assistants

Interactive entertainment characters

Educational tutors

Social app avatars

Gaming NPCs

What Problem It Solves ▼

Enables the creation of interactive digital humans that can engage in natural, real-time conversations with users, perceiving their appearance and emotions, overcoming the limitations of pre-rendered avatars and one-way broadcasts.

Key Features ▼

✓

Quasi real-time streaming generation with low latency

✓

Unlimited interactive duration without quality degradation

✓

Multimodal perception: voice, video, and emotion recognition

✓

Customizable personas with short-term memory

✓

Simple API integration with no SDK lock-in on model side

Overview

Vidu S1 API is a streaming video generation service that enables developers to build real-time interactive digital humans. Unlike traditional text-to-video models that render clips offline, it generates live video during bidirectional voice and video conversations, allowing users to see, hear, and speak with an AI character that perceives their expressions and emotions.

Full Description ▼

The API handles session management via HTTP, real-time audio/video transport through AliRTC, and control signaling over WebSocket. It supports continuous sessions from one minute to over two hours without quality loss, making it suitable for AI companions, live-commerce hosts, and interactive entertainment.

With over 50 preset voices and support for 28 languages, developers can customize persona, avatar image, and short-term memory. The service targets enterprise and startup teams aiming to ship production-grade digital humans quickly.