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Features, pricing and Editor Score side by side — to help you pick the right productivity & automation tool in 2026.
Quick verdict
On our Editor Score, Merlin AI and Sider land almost level. Pick Merlin AI if you want many AI models in one sidebar; choose Sider for AI sidebar on any web page. On pricing, each has a free or freemium plan, so cost isn't the deciding factor here.
| Pricing | Freemium | Freemium |
| Free tier | ||
| Best for | many AI models in one sidebar | AI sidebar on any web page |
Multi-model AI assistant in a browser sidebar
AI sidebar assistant for any web page
Choose Merlin AI if…
Choose Sider if…
Your use case decides this one: Merlin AI leans into many AI models in one sidebar, while Sider is built for AI sidebar on any web page. Weigh features and pricing for your workflow. Both have a free or freemium tier, so spin up each and keep the one that clicks.
Neither is universally better — it depends on your budget and which features matter most. The side-by-side breakdown above shows where each one wins.
Merlin AI (freemium) is best for many AI models in one sidebar, while Sider (freemium) is best for AI sidebar on any web page. See the full feature and pricing comparison above.
Both have paid plans — pricing depends on your usage tier. Open each tool's review for current prices, and watch for free trials.
Merlin AI is usually the easier starting point thanks to a lower barrier to entry. Beginners should favour a free tier and a simple interface over raw power.
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Last updated August 2026. Comparisons are ranked by our Editor Score (features, value and pricing, blended with verified user reviews where a tool has them) — see our methodology.