Sider

Sider is an AI assistant that lives in a sidebar inside Chrome and Edge, giving you instant access to multiple leading AI models on any web page without switching tabs or opening separate apps.

With more than ten million users, it works as a research and productivity copilot: you can summarize articles, research papers, and long-form content into executive summaries or bullet points, translate text across 50 or more languages with context-aware quality, chat with the page or selected text, and compare answers from different models side by side.

Sider also offers a deep research agent for compiling sourced reports, and it can assist with writing, explanations, and analyzing content like YouTube videos.

Students, researchers, marketers, and everyday browsers use Sider to read faster, understand dense material, translate naturally, and get AI help in the flow of their existing browsing. Its strengths are the convenience of an always-available sidebar, broad multi-model access including major frontier models, and capable summarization and translation.

The trade-offs are that the free plan provides limited daily credits for advanced models, so heavy use of the most powerful features requires a paid plan, and as a browser-based assistant it depends on the pages you visit rather than deeply integrating with your own data.

Sider runs on a freemium model with paid tiers. Pricing changes often, so check the official site for current plans.

Sider's core capabilities include AI sidebar on any web page, Access to multiple AI models in one place, Article and document summarization, Context-aware translation in 50+ languages and Deep research agent for sourced reports.

AI sidebar on any web page is built in, Access to multiple AI models in one place is built in, Article and document summarization is built in, Context-aware translation in 50+ languages is built in, so you get a rounded toolkit rather than a single trick.

Each feature is designed to take the manual effort out of the task and help you reach a usable result faster, which is what makes Sider worth a place on your shortlist.

On the plus side, users consistently highlight Always-available, convenient sidebar, Broad multi-model access and Strong summarization and translation as the reasons they keep using Sider.

It isn't perfect, though — Free plan limits advanced model credits and Depends on visited pages rather than your own data are the trade-offs people most often mention, so weigh those against your own priorities before you commit.

As with any AI tool, the output still benefits from a quick human review, but Sider gets you most of the way there with far less effort.

Sider runs on a freemium pricing model, so you can start for free and only pay once you outgrow the free tier — handy for testing it on a real task before spending anything.

AI-tool pricing changes often, so always check the current plans, seats and add-ons on the official site for the latest details before you buy. Who is Sider for? It's best suited for ai sidebar assistant for any web page.

Whether you're a beginner trying this kind of AI tool for the first time or a professional who'll use it every day, it's a credible option to consider.

If you're still deciding, compare Sider against the alternatives and the head-to-head comparisons linked below — looking at features, pricing and real user ratings side by side is the fastest way to find the right fit for your workflow and budget.