Petit Lighthouse

Turn a spare Android phone into your own personal LLM server

Got an old Android phone gathering dust in a drawer? Spin up your own OpenAI-compatible LLM server on it. Once it's on Wi-Fi, your PC, custom tools, and IDE plugins can hit /v1/chat/completions like any other endpoint. Data never leaves your LAN, and your monthly ChatGPT API bill drops to zero. Built with Jetpack Compose + JNI, with streaming response support.