Self-Hosting

Open WebUI brings the ChatGPT experience onto your own infrastructure: Ollama plus any OpenAI-compatible backend behind a modern chat UI with RAG document chat, multi-user auth, voice, prompt tooling, and model management. Privacy-first, offline-capable, and scalable from laptop Docker runs to Kubernetes fleets.

Ollama is the easiest way to run a local model, until the experiment becomes a shared service. Requests queue, latency wobbles, prefixes recompute, and one GPU stops being enough. vLLM answers exactly those problems — but migration is a trade, not an upgrade: simplicity for scheduling, memory control, parallelism, and production operations.