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ViduS1 API

ViduS1 API

Digital human video API

Real-time interactive AI digital humans

Digital humanVideo generation AIDigital humanVideo generation APITechnology
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Highlights

Real-time streaming during conversation
Voice, text, and video input
50 preset voices and custom characters
1000 free trial credits

What you can do with it

  • Digital anchors for live commerce
  • Virtual teachers for lessons
  • AI companions for social apps

How to use it

  1. 1 Create a session via POST request
  2. 2 Join the AliRTC channel
  3. 3 Open the WebSocket control channel
  4. 4 Track heartbeat and billing

Who it is for

Developers building conversational productsE-commerce teams running live commerceEducation platforms adding virtual teachers

Pros

  • Near real-time responses
  • Trial credits with no SDK lock-in
  • Wide voice and character choices

Limitations

  • Developer API, so integration work is required
  • Trial credits are limited and billing is per second
  • RTC and WebSocket setup has a learning curve
  • A young API needing careful testing

What ViduS1 API is

ViduS1 API is a streaming video generation model for real-time interactive digital humans. Unlike offline text-to-video tools that render after the fact, it generates video during the conversation, so the character can see and hear the user and respond in near real time. It supports unlimited-length interaction, multi-modal input through voice, text, and video, and high-resolution output. There are 50 preset voices, and you can define characters ranging from real humans to anime figures or pets. New users get 1000 free trial credits without SDK lock-in. Because it is a developer API, integration work is part of using it.

What you can do with it

- Build a digital human that converses with users in near real time

- Choose from 50 preset voices or define your own character

- Handle voice, text, and video input in one session

- Run interactions that last from a minute up to two hours

- Deploy in social, e-commerce, games, and education products

Who it is for

- Developers building conversational products and apps

- E-commerce teams that want a digital host for live commerce

- Education platforms adding a virtual teacher

- Social apps creating companion characters for users

What to watch out for

This is a developer tool, so you should be comfortable working with APIs. Setup involves an HTTP request, an AliRTC channel, and a WebSocket control channel, which means a real learning curve. The free trial gives 1000 credits, and usage is billed by the second afterward, so costs scale with session length. The API is also young, so test carefully before you depend on it in production, and watch for changes as the service matures.

FAQ

Is there a free trial?

Yes, new users get 1000 credits without SDK lock-in.

How is it different from text-to-video?

It generates video live during the conversation.

What do I integrate?

HTTP, an AliRTC channel, and a WebSocket control channel.

Why it is free

What the official page says: free trial

Free limits, trial length and features are decided by the official site and can change at any time.

Product preview

ViduS1 API product screenshot

Screenshot archived from the listing page, for preview only.

ViduS1 API

The Vidu S1 API can build real-time interactive AI digital humans, supporting multiple languages and voices, with a free trial available.

Visit official site →

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