Vidu S1

What is Vidu S1

Vidu S1 is a streaming video generation model and API platform for evaluating real-time interactive digital humans. It enables custom avatars that can respond through voice, text, and video interaction patterns, with RTC media delivery and WebSocket control signaling.

How to use Vidu S1

1. Create a live session: A server-side call creates the Vidu S1 digital human session and returns the live id plus RTC entry details.
2. Join the RTC room: Your client joins the assigned audio or video channel, publishes user media, and subscribes to avatar output.
3. Open control signaling: A WebSocket control channel sends the ready signal and handles NOT_READY retries with backoff.
4. Maintain the call: Keep heartbeat behavior, session status, and forced hangup reasons visible to the client experience.
5. End deliberately: Send the hangup signal, leave the RTC channel, and close the control connection when the interaction ends.
6. Review usage: Fetch session status and billed usage after completion so product teams can model pilot economics.

Features of Vidu S1

• Real-time streaming video: Low-latency avatar video delivery via RTC.
• Voice-driven interaction: Avatars respond to voice input.
• Bidirectional perception: Avatars can respond to voice, text, and visual context while preserving user state.
• Text & multimodal control: Support for text and other input modalities.
• Custom persona library: Choose from human, anime, or pet/mascot character types. Upload your own reference assets.
• Provider integrations: Connect with HeyGen API for avatar video workflows and Replicate for async model predictions.
• Server-held credentials: Keep Vidu S1, HeyGen API, and Replicate tokens off the browser.
• Provider-safe routing: Normalize session ids, prediction ids, webhook states, retry reasons, and user-facing errors.
• Policy and usage review: Track consent, avatar approval, provider spend, generated media retention, and final session status.

Use Cases of Vidu S1

• AI Companion: Create a persistent digital companion with a custom persona, voice, and short-term memory loop.
• Virtual Idol: Run interactive fan moments where a character can listen, react, and perform in real time.
• Training: Turn onboarding, product walkthroughs, and coaching into live guided video sessions.
• AI Service: Give support or concierge workflows a face, voice, and escalation-ready session model.
• Live Commerce: Use a branded host or mascot to explain products, answer questions, and guide shoppers.
• Game & Film: Prototype an NPC, guide, or companion character that responds across screens.
• Education: Support language practice, lecture explainers, or role-play lessons with a live avatar.
• Brand Mascot: Give campaigns a reusable animated persona for events, social, and customer education.

Pricing

The supplied notes describe duration-based credit usage beginning when the digital human is live. Exact credit rules, account balance checks, voice clone pricing, and session limits should be verified in the current Vidu account before production deployment.

FAQ

What is Vidu S1? Vidu S1 is a streaming video generation model for real-time interactive digital humans. It is designed for custom avatars that can respond through voice, text, and video interaction patterns.

Is this Vidu S1 page connected to a live API? No. This landing page is informational and lead-generation only. A production integration should keep Vidu S1, HeyGen API, and Replicate tokens on the server and expose only short-lived session or job details to the client.

What do teams need to integrate Vidu S1? A typical integration prepares a server-side API token, one avatar image or base64 asset, a persona description, RTC media setup, a WebSocket control channel, readiness retry handling, heartbeat handling, hangup logic, and usage review.

Can teams connect HeyGen API or Replicate with a Vidu S1 pilot? Yes. Teams can plan a server-side provider layer that keeps Vidu S1, HeyGen API, and Replicate credentials off the browser, routes realtime avatar sessions or asynchronous prediction jobs, and normalizes status, retries, usage, and policy review before exposing results to users.

Which Vidu S1 avatar styles are supported? The supplied product notes describe custom personas across human presenters, anime characters, and pet or mascot-style avatars. Teams should validate image requirements and content policy in the current Vidu console before launch.

How is Vidu S1 usage billed? The supplied notes describe duration-based credit usage beginning when the digital human is live. Exact credit rules, account balance checks, voice clone pricing, and session limits should be verified in the current Vidu account before production deployment.