AIRI is a self-hosted, open-source AI companion platform by moeru-ai that enables users to create and interact with personalized AI characters through realtime voice chat, gaming integration, and multi-platform deployment. Built with a Rust backend and TypeScript/Vue.js frontend, AIRI supports VRM and Live2D character models with full 3D rendering via WebGPU. The project integrates with over 20 LLM providers including OpenAI, Claude, Google Gemini, Groq, Ollama, and vLLM, giving users complete flexibility over which AI model powers their companion. Key capabilities include realtime speech recognition and synthesis, game integration with Minecraft and Factorio, Discord and Telegram bot support, and a RAG-based memory system for persistent context. AIRI runs on desktop (macOS, Windows via Tauri), web browsers, and mobile devices via PWA and Capacitor, with local inference support through NVIDIA CUDA and Apple Metal acceleration using HuggingFace Candle. The platform uses DuckDB WASM for efficient client-side data storage and WebAssembly for performance-critical components.