Quick answer: Open WebUI + Ollama = your own ChatGPT interface on VPS. Docker Compose in 5 minutes.
Related
Self-host on VPS: Order VPS · NexoraHost · nexorahost.com (Frankfurt · GDPR · NVMe)
Frequently asked questions (FAQ)
Do I need Ollama for Open WebUI?
Yes – Open WebUI is the interface, Ollama the engine. Both on same VPS or Ollama remotely reachable.
Open WebUI vs ChatGPT?
Open WebUI: free after VPS cost, local data, any models. ChatGPT: best models, subscription, cloud.
HTTPS for Open WebUI?
Via Traefik/Caddy with Let's Encrypt or Cloudflare tunnel. Don't expose unencrypted publicly.
Multiple users?
Yes – enable registration in Open WebUI, admin approves users. Ideal for small teams.
RAG with own documents?
Open WebUI supports document upload and RAG. For large knowledge bases: add vector DB.