deputyOS vs Open WebUI
Open WebUI is the leading self-hosted AI interface; deputyOS is the appliance underneath one. They solve different layers, and often work together.
Last reviewed
Short answer: These are different layers, not rivals. Open WebUI is the better interface; deputyOS is the appliance that removes the assembly. If you enjoy running your own stack, use Open WebUI on whatever you like.
Where Open WebUI is the better choice
- The most capable self-hosted AI interface available, by a wide margin
- Huge ecosystem: tools, functions, pipelines, RAG, multi-user, RBAC, SSO
- Provider-agnostic — Ollama, OpenAI-compatible endpoints, and most things in between
- Runs anywhere Docker runs, so it fits whatever infrastructure you already have
- Very active development and a large body of community documentation
Where deputyOS is the better choice
- An OS image, not a container: security baseline, updates and rollback are handled
- Nothing to assemble — no Docker, reverse proxy, TLS or backup scripting to wire up
- Remote access without port forwarding, via an outbound tunnel per device
- Fleet view across several machines, with per-device cost tracking
- Air-gapped tier with model weights baked into the image
Not actually the same thing
Open WebUI is an application. deputyOS is an appliance image. Comparing them is a bit like comparing a browser to a laptop — the question is not which is better but which problem you have.
If your problem is “I want the best self-hosted AI interface”, the answer is Open WebUI and this page will not change that. It is genuinely excellent, and its feature depth — pipelines, functions, RAG, RBAC, SSO — exceeds anything deputyOS ships in its own UI.
If your problem is “I want an AI assistant running reliably on hardware I own, and I would rather not become its sysadmin”, that is the appliance question.
What the appliance actually removes
Running Open WebUI well on your own hardware means, at minimum:
- Choosing and maintaining a base OS
- Docker or Kubernetes, and keeping it patched
- A reverse proxy with TLS
- Remote access — port forwarding, a VPN, or a tunnel
- A firewall policy, and ideally AppArmor or SELinux
- Backups, encrypted, off-device, with a tested restore
- An update process that does not leave you with a broken box at 11pm
None of that is hard individually. Together it is a standing commitment, and it is where most self-hosted setups quietly rot — the backup that was never tested, the container three versions behind.
deputyOS ships those decisions pre-made: AppArmor enforcing, ufw default-deny, fail2ban, hardened sysctls, ClamAV signatures pre-loaded, A/B slot updates with watchdog rollback, and client-side encrypted backup. The cost is that they are pre-made — you get our answers, not yours.
Where each is the better fit
Open WebUI is better if you already run infrastructure you are comfortable with, you want maximum control over the stack, you need its specific features (pipelines, complex RAG, multi-user with SSO), or you enjoy the operating side. It also runs on far more substrates than deputyOS supports.
deputyOS is better if you want to flash an image and be done, you are running several machines and want them managed together, you need remote access without touching router configuration, or you need to work with no network at all.
Using both
They compose. deputyOS profiles are assistant stacks, and nothing stops a deputyOS device from serving a different interface — the appliance provides the hardened base, signed updates, tunnel and backup; the application layer is yours.
The honest summary: deputyOS is competing with the assembly work, not with Open WebUI. If assembling is the part you enjoy, you do not need an appliance.