Decision Support · Side-by-side
Compare pricing, strengths, and use cases so it is easier to pick the right fit.
Change tools
Sider AI
Best overallFor most everyday users, Sider AI is the more practical choice because it lives in your browser and works with multiple AI models in one sidebar. DeepSeek Chat wins on raw power and price—its 1-million-token context window and free access are unmatched—but lacks a mobile app and is harder to set up for non-technical people.
DeepSeek Chat
Sider AI
Scores at a glance
Choose DeepSeek Chat if
Choose Sider AI if
Key differences
Facts side by side
| DeepSeek Chat | Sider AI | |
|---|---|---|
| Free plan | ||
| Mobile app | ||
| API access |
Common questions
No—Sider AI is better for email because it lives in your browser and can rewrite text on any webpage. DeepSeek Chat is a separate website, so you'd have to copy and paste.
Yes, but only through a mobile web browser. There is no native app, so the experience is less smooth than a dedicated app.
The extension itself is free, but to use premium models like GPT-4 you may need your own API key, which costs money. DeepSeek Chat is completely free with no paid tiers.
DeepSeek Chat is far better for coding—it handles large codebases, generates code with syntax highlighting, and explains its reasoning step by step. Sider AI can do basic code generation but is not designed for serious development.
DeepSeek Chat states it does not use your chats for training. Sider AI shares data with the AI providers you connect (like OpenAI), so privacy is weaker.
Sider AI wins for everyday browsing ease; DeepSeek Chat wins for free, deep analysis of long content.
If you just want AI help while you browse the web, install Sider AI—it's the easiest way to get started. If you need to dig deep into long documents or code and don't mind using a website, DeepSeek Chat is an incredible free tool. Pick based on where you do most of your work: in the browser or in a document.
Detail pages: DeepSeek Chat · Sider AI
