Handcrafted-Persona-Engine

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Handcrafted-persona-engine is an AI-powered interactive avatar engine that uses Live2D, LLM, ASR, TTS, and RVC. It's ideal for VTubing, streaming, and virtual assistant applications, offering real-time character animation and AI-driven voice.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Skill level

Technical

About

What is handcrafted-persona-engine?

Handcrafted-persona-engine is an AI-powered interactive avatar engine designed for VTubing, streaming, and virtual assistant applications. It integrates Live2D for character animation, a Large Language Model (LLM) for personality and conversation, Automatic Speech Recognition (ASR) for listening, Text-to-Speech (TTS) for speaking, and Real-time Voice Cloning (RVC) for voice customization. The engine allows users to create captivating, interactive avatars that listen through a microphone, think with an LLM guided by a personality file, speak back with real-time TTS, and drive a Live2D avatar in sync. It supports both built-in transparent overlays and OBS integration via Spout for streaming, making it a versatile tool for various interactive character needs.

Best used for

Ideal for VTubers and streamers who need to integrate AI co-hosts or chat-reactive characters, and developers creating virtual assistants or interactive NPCs. Especially valuable for those requiring real-time voice, animation, and personality integration for engaging digital experiences.

Common actions

create virtual avatars

generate AI conversations

stream with AI characters

develop virtual assistants

deepfakecollaborationlow-code/no-codeautomated workflowworkflows"AI Agents"face swappinggithub copilotopen-source

Capabilities

Key features

Live2D avatar rendering
LLM conversation
ASR voice input
Real-time TTS
RVC voice cloning
VBridger/Audio2Face lip-sync
OBS-ready output

Target Audience

vtubersstreamersdeveloperscontent creators

Integrations

obs

Pricing & Plans

Open Source

Free

FAQs

What hardware is required to run Handcrafted-persona-engine?

The engine requires a Windows x64 system with an NVIDIA GPU that supports CUDA. ASR, TTS, and RVC components all rely on CUDA via ONNX Runtime, meaning CPU, AMD, or Intel GPUs are not supported. Approximately 16 GB of free disk space is also needed for model downloads.

Can I use my own Live2D model with the engine?

Yes, you can bring your own Live2D model. The engine includes the Aria model rigged out-of-the-box for its lip-sync and expression pipeline. For custom models, you'll need to refer to the Live2D Integration Guide for rigging requirements and VBridger parameter specifications.

How does the engine handle different LLM models?

The engine is designed to work best with a fine-tuned LLM trained on its specific communication format. However, it also supports standard OpenAI-compatible models like Groq, OpenAI, and Ollama. For these, careful configuration of the personality.txt file is recommended to achieve desired character traits.

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