Thinkbeside Adds Multi-Model AI Assistance to Chrome’s Sidebar

Summary

Thinkbeside is a Chrome extension that places an AI sidebar beside the page a user is reading, researching or writing. It connects to GPT, Claude, Gemini, DeepSeek and Grok, while allowing users to choose a provider and model or use automatic model selection. The extension can answer questions about webpages, selected text, PDFs and Word documents, summarize YouTube videos from available transcripts, and cite pages attached to a question. Users can attach up to six open tabs, compare answers from multiple models side by side, and continue conversations with their existing context. It also includes writing assistance for supported text fields, rewriting, paraphrasing, translation and explanations, plus image or screenshot analysis with compatible vision models. Reusable prompts, saved conversations, document libraries, cross-browser sync and keyboard shortcuts are included for repeat workflows. Thinkbeside is free to install, but an account and at least one provider API key are required; usage is billed directly by the selected provider and is separate from consumer subscriptions such as ChatGPT Plus or Claude Pro. The listing identifies version 1.1.1, English-language support and disclosed processing of identity, authentication, communications, activity and website-content data. The developer states that the product is independent and not endorsed by the supported AI providers.