GlenSum vs Sider: same core feature, very different pricing model
Sider and GlenSum share the same basic shape: a browser side panel that turns the page you're reading into a summary. Both handle articles, both work on long documents, both are one click away. If you're choosing between them, the differences come down to three things: what happens after the summary, how your data flows, and how you pay.
Feature by feature
| Sider | GlenSum | |
|---|---|---|
| Page & article summaries | Yes | Yes |
| YouTube video summaries | Yes | Yes |
| Chat with page | Yes | Yes |
| Side-by-side bilingual summaries | — | Pro |
| Mind-map export | Varies by plan | Pro |
| Markdown export (Obsidian-ready) | Varies by plan | Pro |
| Local PDF import | Varies by plan | Pro |
| Data route | Through Sider's cloud | Direct to your AI provider (BYOK) |
| Pricing | ≈ $10/month subscription | $9.99 one-time |
The credit question
Subscription assistants price by usage: plans come with monthly or daily credit allowances, and heavy sessions can hit the ceiling. For a heavy reader, that means either upgrading a tier or slowing down. GlenSum inverts the model: the tool is what you buy, and AI usage runs through your own API key — no credits, no caps from us. The free built-in models cover light use with zero setup.
Data flow, in one paragraph
With Sider — as with most subscription assistants — the page content you summarize is processed on the vendor's infrastructure. That's a legitimate architecture, but it means your reading habits pass through a third party. With GlenSum's BYOK mode, content travels from your browser straight to the AI provider you configured; our server only handles license activation. If you're privacy-conscious, this single architectural difference may decide the comparison on its own.
Who should pick which
- Pick Sider if you want a broad multi-model assistant with image generation, chat across many tabs, and don't mind a monthly bill or managing credits.
- Pick GlenSum if your core need is faster reading — summaries, structure, exports — and you'd rather pay once and never think about a renewal again.
Compare them yourself
GlenSum's free plan needs no card and no account. Two minutes to install, one click to your first summary.
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