Chatpad AI vs Open WebUI
A side-by-side comparison of two self-hosted ai chat uis options — licensing, setup difficulty, resource needs, and what each one replaces.
Open WebUI
Feature-rich self-hosted web interface for local LLMs
| Feature | Chatpad AI | Open WebUI |
|---|---|---|
| Deploy effort | Under-an-hour setup | ≈5-minute setup |
| Health score | 19 · At risk | 100 · Excellent |
| Category | AI Chat UIs | AI Chat UIs |
| License | MIT | BSD-3-Clause |
| Language | TypeScript | Python |
| Setup difficulty | Easy | Easy |
| Min. RAM | 256 MB | 2,048 MB |
| Deployment | docker, source | docker, kubernetes, helm |
| GitHub stars | ★ 1,486 | ★ 152,860 |
| First released | 2023 | 2023 |
| Replaces | ChatGPT | ChatGPT, Poe |
What are Chatpad AI and Open WebUI?
Chatpad AI
Chatpad AI is an open-source chat interface that can be self-hosted and pointed at any OpenAI-compatible endpoint, including local model servers. It stores conversations in the browser and offers a clean, distraction-free UI.
- Clean chat interface
- Works with local endpoints
- Browser-based storage
- Prompt library
Open WebUI
Open WebUI is an extensible, offline-capable web interface for interacting with local and remote LLMs. It supports Ollama and any OpenAI-compatible API, with chat history, RAG document uploads, multi-user accounts, and a plugin pipeline system.
- Polished ChatGPT-style UI
- Built-in RAG and web search
- Multi-user with roles
- Model and prompt management
Chatpad AI vs Open WebUI: key differences
Chatpad AI is written in TypeScript, while Open WebUI is built with Python. Licensing differs — MIT for Chatpad AI versus BSD-3-Clause for Open WebUI. Chatpad AI is the lighter option, starting around 256 MB of RAM against 2,048 MB for Open WebUI. Open WebUI has the considerably larger community, at 152,860 GitHub stars versus 1,486.
Why pick each one
Choose Chatpad AI if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (1.5k GitHub stars)
Choose Open WebUI if…
- Very active development
- Works with many backends
Watch out for
- Feature set can feel overwhelming
Frequently asked questions
Is Chatpad AI or Open WebUI better?
Neither is universally better. Open WebUI has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are Chatpad AI and Open WebUI free and open-source?
Yes. Chatpad AI is licensed under MIT and Open WebUI under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run Chatpad AI and Open WebUI with Docker?
Chatpad AI: yes. Open WebUI: yes.
Which is lighter on resources, Chatpad AI or Open WebUI?
Chatpad AI has the smaller minimum footprint at 256 MB of RAM, compared to about 2,048 MB for Open WebUI. Real-world usage depends on library size, user count, and enabled features.