Sider is a browser-based AI assistant and sidebar that combines ChatGPT, Claude, Gemini, Grok, and DeepSeek for chatting, summarizing, translating, and automating tasks on any webpage.
About
Sider is an AI assistant that lives in a sidebar attached to the browser, giving users a single place to chat with leading language models, understand content on any webpage, and carry out browser tasks without leaving the page. It addresses a common friction point: instead of copying text into separate tabs or applications to summarize an article, translate a PDF, compare product prices, or draft a reply, users can act directly on the content in front of them.
The product is organized around four capabilities the vendor calls Chat, Hand, Code, and Create. Chat provides access to models such as GPT, Claude, Gemini, Grok, and DeepSeek for summarizing, translating, and explaining content. Hand automates browser tasks such as price comparison and form filling. Code lets users modify how websites look and behave using plain-language instructions. Create covers generated images, videos, slides, and documents. Sider states it has more than 10 million active users and over 100,000 five-star ratings, and one account works across devices, including browser extensions and apps for iOS, Android, macOS, and Windows.
Key Features
Pricing & Fees
- Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans. The vendor operates a freemium model in which all plans include all features, and higher tiers add more credits and a stronger cloud computer.
- Recognition: Sider reports Chrome Editors' Picks for 2026 and Chrome Favorites of the Year for 2025.
- Cross-platform availability: Available as a browser extension (with an "Add to Chrome" option) and as apps for iOS, Android, macOS, and Windows, with one account working across devices.
- Scale: The vendor states 10 million or more active users and over 100,000 five-star ratings.
Who It's For
Sider suits students and researchers who need to summarize readings, translate PDFs, and study course material; writers and marketers who draft, rewrite, and edit content; online shoppers who want automated price comparisons across retailers such as Amazon, Best Buy, and eBay; and general professionals who want help with email triage, form filling, and web research. Developers and tinkerers can use the Code capability to restyle or extend websites with plain-language instructions, while educators can use courseware-oriented features like interactive reading and math solving.
FAQ
What is Sider?Sider is a browser-based AI assistant and sidebar that combines leading language models such as GPT, Claude, Gemini, Grok, and DeepSeek to help users read, write, translate, create, and automate tasks on any webpage.
Is Sider free to use?Sider uses a freemium model; the vendor states that all plans include all features, with higher tiers providing more credits and a stronger cloud computer. Current prices are not publicly listed on the pages reviewed.
Which platforms and browsers does Sider support?Sider offers a Chrome extension and dedicated apps for iOS, Android, macOS, and Windows, with one account usable across devices.
What can Sider's automation (Hand) do?Hand can perform browser tasks hands-free, including comparing shopping prices, filling out forms automatically, researching across websites, and triaging a Gmail inbox.
Can Sider translate documents and images?Yes, Sider translates webpages, PDFs, and images, alongside other reading aids such as summarization, ChatPDF, and YouTube summaries.
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