Sider is a browser sidebar that puts ChatGPT, Gemini, Claude, DeepSeek, and Grok in one place for search, reading, and writing.
Sider is a Chrome extension that opens a multi-model AI sidebar on any tab, so you can query ChatGPT, Gemini, Claude, DeepSeek, and Grok without switching windows. It also handles reading and writing directly on the page: summarize articles or PDFs, translate selected text, and draft or reword in input boxes.
The extension is free, made by Boston-based Vidline Inc., and also runs on Edge, Safari, iOS, Android, Windows, and macOS. You can bring your own OpenAI API key, and a privacy policy covers how data is handled.
Sider lists ChatGPT (GPT-5), Claude, DeepSeek, Gemini, Grok, and Llama among the models available in its sidebar. Free multi-chatbot support is included.
The Chrome Web Store listing presents Sider as free to add. The page does not document paid tiers, so check the Sider website for current plan details.
Yes. Sider supports bringing your own OpenAI API key and running on your own tokens.
The AI group chat feature lets you put the same question to models like ChatGPT, Gemini, and Claude in one conversation and compare their answers as they come in.
Sider supports PDFs, images, web pages (single or multiple tabs), and audio files such as MP3, WAV, M4A, and MPGA for transcription and summaries.
The extension runs on Chrome and Edge, with extensions for Safari and apps for iOS, Android, Windows, and macOS. One account works across them.
Yes. Sider offers contextual writing help in input boxes on sites including Twitter, Facebook, LinkedIn, and Gmail.
The developer states that data is not sold to third parties, is not used for unrelated purposes, and is not used to determine creditworthiness. Full details are in the Sider privacy policy, and support is available at care@sider.ai.
