Vtuber Assistant

Paid

★ 272 • Updated Aug 16, 2026, 10:35 AM

Vtuber Assistant is a desktop application available on Steam designed to serve as an AI-powered co-host for VTubers and live streamers.

Use Cases ▼

Enhancing live streams with an AI co-host that reacts to on-screen gameplay

Automatically responding to stream chat through avatar animations

Using custom VRM avatars for a personalized VTuber presence

Running a fully offline VTuber setup with no API key dependencies

Adding a face rig to existing VTuber models for real-time expression tracking

Engaging viewers with 84 different reactive animations

What Problem It Solves ▼

Vtuber Assistant solves the challenge of keeping VTuber streams engaging by providing an automated AI co-host that watches the screen, hears audio, and reads chat, then reacts with appropriate animations. It removes the need for manual monitoring or separate tools for face rigging and chat response, and works offline without API keys.

Key Features ▼

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Fully offline capable, no API keys required

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Offers 84 built-in animations for reactive behavior

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Supports custom VRM avatars

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Includes full VTuber face rig

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Monitors screen, audio, and chat for context-aware reactions

Overview

Vtuber Assistant is a desktop application available on Steam designed to serve as an AI-powered co-host for VTubers and live streamers. The software monitors the user's screen content, listens to system audio, and reads stream chat in real time, then generates reactive behaviors through a library of 84 pre-built animations. It supports fully offline operation and does not require API keys, making it suitable for privacy-conscious users.

Full Description ▼

The application includes a full VTuber face rig and supports custom VRM avatars, allowing users to bring their own 3D models. It can function as a companion that reacts to gameplay, conversations, and audience interactions, enhancing stream engagement without requiring a human moderator. As a paid tool distributed on Steam, it targets content creators seeking an automated, attentive co-host.