Sider is an AI assistant that lives in a browser sidebar and desktop app, giving you one interface to chat with multiple leading models including GPT, Claude, Gemini, Grok and DeepSeek. It can summarize and translate web pages and PDFs, generate and edit images, run deep research, and assist with writing on any site you visit.
Access GPT, Claude, Gemini, Grok, DeepSeek and 20+ models in a single sidebar and compare their answers side by side.
Summarize, explain, and ask questions about any web page you are viewing without leaving the tab.
Upload PDFs to summarize, translate, and chat with documents, extracting key points from long files.
Run multi-step research queries that gather sources across the web and return cited, structured reports.
Generate and edit images with built-in AI image tools directly inside the assistant.
Draft, rewrite, translate, and improve text on Gmail, Google Docs, social platforms, and other sites.
Delegate browsing tasks to an agent that can navigate pages and perform actions on your behalf.
Quickly summarize long articles, PDFs, and run deep research with cited reports while browsing.
Send one prompt to GPT, Claude, and Gemini at once to compare answers before deciding which to use.
Draft, rewrite, and translate messages directly inside Gmail, Google Docs, and social platforms.
Ask follow-up questions about any web page or document to understand complex material faster.
Use Sider as a Chrome/Edge extension, web app, and desktop and mobile apps with synced history.
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