Side by side
Open WebUI vs Sider
Both stand on ai chatbots and assistants. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan AndroidAPIiPhone+5
Open WebUI combines model connections, retrieval, extensions, and deployment choices in a self-hosted interface. The free plan has a branding condition for larger deployments, and external configurations may route data externally.
Visit Open WebUI Free plan AndroidExtensioniPhone+3
Sider combines browser assistance, automation, content creation, and multi-model chat across desktop, mobile, and web platforms. Its free plan and broad tools are balanced by third-party processing and undisclosed plan pricing.
Visit SiderThe facts
| Open WebUI | Sider | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Android, API, iPhone, Linux, Mac, Self-hosted, Web, Windows | Android, Extension, iPhone, Mac, Web, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 3 |
| Maker | Not published | Sider |
| Website | openwebui.com | sider.ai |
| On ai chatbots and assistants | #12 of 65 | #16 of 65 |
Open WebUI: what it does well
- Connects to Ollama and OpenAI-compatible APIs
- Offers local RAG and multiple retrieval controls
- Supports on-premises, private-cloud, and air-gapped deployment
- Includes directory, SSO, and role-based controls
- Free plan supports internal use with original branding
What to know first
- External configurations can route data outside the deployment
- More than 50 users must retain branding absent an exception
- Enterprise support offers guidance, not implementation services
Sider: what it does well
- Works across major platforms
- Summarizes webpages, PDFs, and videos
- Automates browser research tasks
- Creates images, videos, slides, and documents
- Free plan available
What to know first
- AI-request content passes through Sider servers
- Services are not designed for HIPAA or FISMA compliance
- Higher plans provide more credits rather than different features
Alternatives to Open WebUI Alternatives to Sider The whole list