Introduction
TL;DR
- An open-source VRM avatar companion app — an alternative to Grok Companion
- Load a VRM model, connect any LLM provider, and bring your AI companion to life
- Voice, memory, and a relationship system built in
- Local-first — your data stays on your device
What is Utsuwa?
Most AI companions today are either text-only chat interfaces or locked behind proprietary platforms. You don’t own the character and you don’t own the data.
Utsuwa takes a different approach. It gives you a 3D avatar that speaks, remembers your conversations, and develops a relationship with you over time. No accounts, no subscriptions. Your data stays on your device.
Connect any LLM provider you want — OpenAI, Anthropic, Google, or a local model through Ollama. Pair it with any of 13+ TTS providers for voice. Load any VRM model as your companion’s body. Everything is modular and swappable.
“Utsuwa” means “vessel” in Japanese — a container for AI to inhabit visually. The app is the vessel; you choose what goes inside.
Getting Started
Web
No installation required. Runs entirely in your browser — works on desktop and mobile.
Contributing
Utsuwa is open source and welcomes contributions. See the Contributing Guidelines for how to get involved.