Sider is one of the biggest names in this category. It works mainly as a chat sidebar you keep open next to a page. Summate is the opposite approach: a small popup that returns one finished summary in a click, running on the AI model built into your browser wherever that is available. Here is how the two compare on price, privacy and everyday use.
| Summate | Sider | |
|---|---|---|
| How it works | Toolbar popup — one click, one finished summary | Chat sidebar you open alongside the page |
| Free plan | Unlimited on-device summaries (Chrome 138+), plus a free cloud trial of 50 summaries to start and 10/day after | Free tier with daily limits, then a paid subscription |
| Paid plans | Pro $4.99/month (unlimited cloud summaries, follow-ups and bilingual) or Unlimited $8.99/month | Subscription-based; as of September 2026 its advanced features are paid, and prices can change — check Sider's site for the current figure |
| Where your page goes | On-device summaries never leave your computer | Content is processed in Sider's cloud |
| Feature breadth | Summaries, follow-up Q&A, history, Markdown & Notion export, RSS, bilingual; PDF and YouTube on the roadmap | Broader today: sidebar chat, PDF, screenshots, YouTube and more |
Pick Sider if your habit is to chat with pages and you want every extra format in one place. Pick Summate if you mostly want a clean summary of an article and you value not signing in and not uploading the page. Both are quick to test, and neither locks you in.
Sider is one of the largest extensions in this category. It works mainly as a chat sidebar you open next to a page, with a subscription covering its advanced features.
Sider is subscription-based. As of September 2026 its advanced features require a paid plan and its prices may change over time — check Sider’s own website for the current figure.
No. Summate opens as a small popup and returns a finished summary in one click. If you prefer working inside a chat sidebar, that is exactly what Sider is for.