Sider

What is Sider?

Sider is an AI browser sidebar tool that integrates ChatGPT and other large language models directly into web browsers, enabling users to access AI capabilities without leaving their current webpage. Developed by a team focused on productivity enhancement, Sider operates as a freemium extension compatible with Chrome, Edge, and other Chromium-based browsers.

The tool provides deep research functionality, allowing users to highlight text, ask questions about page content, and receive context-aware responses. Its knowledge base features enable users to upload documents, PDFs, and files for the AI to reference during conversations, creating a personalized knowledge repository accessible across browsing sessions. Users can maintain conversation history within the sidebar, organizing chats by topic or webpage for later retrieval. The sidebar supports multiple AI models, giving users flexibility in choosing between different language model backends depending on their needs and computational preferences.

Sider's primary use cases include content analysis, document research, writing assistance, and quick information lookup while browsing. Professionals use it for competitive research, contract review, and data extraction from web pages. Students leverage it for academic research and citation gathering. The freemium model provides basic functionality at no cost, while premium tiers unlock advanced features like priority model access, extended context windows, and higher usage limits. Pricing details vary by subscription tier, with options for monthly or annual billing.

Integration points include direct connectivity with GPT-4, Claude, and other third-party language models. The tool maintains conversation context across different websites, allowing users to continue research threads across multiple sources. Privacy features include local storage options and choices about data retention.

Comparable alternatives include Perplexity's browser extension, Copilot for