Chatbot UI is an open-source, full-featured chat interface for AI models that aims to lower the barrier for anyone wanting to run their own AI-powered chatbot — whether using remote LLM APIs or local/self-hosted models. It bundles a modern frontend (Next.js + TypeScript + Tailwind) with a backend (Supabase by default) for persistent storage of chats, history, and user settings, replacing earlier local-storage-only approaches. The project supports multiple models/providers (e.g. OpenAI, local models via Ollama), and by switching env-vars you can self-host the whole stack or deploy in the cloud (e.g. via Vercel + Supabase) for personal or shared use. ...