Handler Overview

Open Avatar Chat uses a modular Handler architecture where each Handler manages one stage of the conversation pipeline.

Handler Categories

Client Handler

• RTC Client - Server-rendered WebRTC client
• LAM Client - LAM client-side rendering

ASR Handler

• SenseVoice - FunASR SenseVoice speech recognition

LLM Handler

• OpenAI Compatible - OpenAI-compatible API
• Qwen-Omni - Qwen multimodal model
• Dify - Dify Chatflow integration

Agent Handler

• Chat Agent - Multi-turn tool-calling Agent (Beta)

TTS Handler

• Bailian CosyVoice - Bailian CosyVoice API
• CosyVoice Local - CosyVoice local inference
• Edge TTS - Microsoft Edge TTS

VAD Handler

• SileroVAD - Silero voice activity detection
• Smart Turn - Smart Turn end-of-utterance (Duplex)

Avatar Handler

• LiteAvatar - LiteAvatar 2D avatar
• LAM - LAM 3D avatar
• MuseTalk - MuseTalk 2D avatar
• FlashHead - FlashHead diffusion avatar

Manager Handler

• Manager Console - Real-time session monitoring and signal flow visualization