Docs

Introduction

What OpenThena is and why it exists.

OpenThena is an open-source, privacy-first AI assistant. It pairs a beautiful streaming chat experience with a simple promise: your conversations are never stored on a server. There is no database, no account system, and no telemetry. Everything you type stays in your browser.

Under the hood, OpenThena uses a LiteLLM-style gateway — a single, OpenAI-format interface to any model — with the Xiaomi MiMo model as its default brain. Because the gateway is provider-agnostic, you can swap the model with a single environment variable, or route everything through a real LiteLLM proxy.

Highlights

Zero-storage — stateless API, local-only history.
Open source — MIT licensed, fully auditable.
Streaming — token-by-token responses on the edge.
Portable — one-click deploy to Vercel or self-host.

Privacy by architecture, not policy. OpenThena can't leak your chat history because it never has it. Read more in the Privacy model.

Ready to try it? Head to the Quickstart.