How much RAM does Open WebUI need?

Plan on 4–8 GB for typical use; add headroom if you expect many concurrent users.

What stack does Open WebUI run on?

Python + (Ollama/OpenAI-compatible backend).

Yes — size the plan so Open WebUI plus your other workloads fit in RAM with room to spare.

Automation

A ChatGPT-style UI for your own models.

A polished chat interface over Ollama and OpenAI-compatible APIs, with users and RAG.

Open WebUI turns a local model server into a usable, multi-user product for your team.

1
Provision a VPS
Choose a plan with room for your data as well as the app.
2
Install the stack
Install Python + (Ollama/OpenAI-compatible backend).
3
Deploy the application
Follow the project’s official install guide for your distribution.
4
Enable HTTPS
Serve it on your own domain behind a reverse proxy with a certificate.
5
Back it up
Schedule a database dump plus a copy of any uploaded files to an off-box location.

Give Open WebUI its own database user with rights only on its own schema.
Reverse-proxy Open WebUI and terminate TLS at the proxy so certificates are managed in one place.
Take a VPS snapshot before major upgrades so you can roll back cleanly.
Keep Open WebUI patched — most self-hosting incidents are unpatched software.

How much RAM does Open WebUI need?: Plan on 4–8 GB for typical use; add headroom if you expect many concurrent users.
What stack does Open WebUI run on?: Python + (Ollama/OpenAI-compatible backend).
Can I run other things on the same VPS?: Yes — size the plan so Open WebUI plus your other workloads fit in RAM with room to spare.

Looking for something else? Popular alternatives include LibreChat, LocalAI, ChatGPT (hosted) — browse all app guides.