Jan vs Open WebUI
Self-host pick — both replace ChatGPT (AI chat assistant (consumer UI)).
Both Jan and Open WebUI self-host as a replacement for ChatGPT (AI chat assistant (consumer UI)). Pick Jan if you want a AGPL-licensed codebase (AGPL-3.0); pick Open WebUI for BSD (BSD-3-Clause). Both run in roughly the same cost bracket — free; it's a local desktop app — no server to host vs $10 vps for the ui; the model server adds the real cost — $0 on a workstation gpu, $200+/mo on cloud gpu.
| Janopen-source | Open WebUIopen-source | |
|---|---|---|
| License | AGPL-3.0 | BSD-3-Clause |
| Setup time | 5min installer (desktop app) | 10min docker-compose (Open WebUI + Ollama) |
| Monthly cost | Free; it's a local desktop app — no server to host. Cost is the workstation that runs the model. | $10 VPS for the UI; the model server adds the real cost — $0 on a workstation GPU, $200+/mo on cloud GPU. |
| GitHub | menloresearch/jan | open-webui/open-webui |
| Replaces | ChatGPT | ChatGPT |
Good fit for
Jan
Single users who want an Electron desktop ChatGPT replacement with no server, no Docker, no account.
Weak at:Multi-user / team scenarios — Jan is fundamentally local-first; for shared use deploy Open WebUI or LibreChat instead.
Open WebUI
Teams that want a ChatGPT-shaped multi-user web app with RBAC, prompt templates, and a built-in RAG knowledge base.
Weak at:Image generation and voice mode — these need bolt-on integrations (e.g. Automatic1111 for SD) rather than working out of the box.
In a terminal? npx -y github:SolvoHQ/os-alt-cli chatgpt prints ChatGPT's self-host options including both —
how the CLI works →
FAQ
Which is easier to self-host, Jan or Open WebUI?
Jan: 5min installer (desktop app). Open WebUI: 10min docker-compose (Open WebUI + Ollama).
What does each cost to run?
Jan: Free; it's a local desktop app — no server to host. Cost is the workstation that runs the model.. Open WebUI: $10 VPS for the UI; the model server adds the real cost — $0 on a workstation GPU, $200+/mo on cloud GPU.. Both projects are free and open source.
Do Jan and Open WebUI replace the same SaaS?
Yes — both are open-source alternatives to ChatGPT.