Thinkbeside: AI Sidebar for GPT, Claude & Gemini

AI sidebar for any page: chat with GPT, Claude, Gemini, DeepSeek and Grok. Summarize pages, PDFs and YouTube with your own API keys.

Your browser is where you read, research and write. Bring your AI assistant right beside it. Thinkbeside is an AI sidebar for Chrome that connects GPT, Claude, Gemini, DeepSeek and Grok to the page you’re working on. Ask questions about a webpage, chat with a PDF, summarize a YouTube video, compare AI answers or improve your writing—without copying everything into another tab. One sidebar. Multiple models. The context you choose. ✨ WHY THINKBESIDE? Stop switching between your source material and your AI conversation. Keep the article, document or draft in view while you work through it with AI. Choose the provider and model that suit your task. Send the same question to several models, compare their responses and continue with the answer you find most useful. Thinkbeside works with your own API keys. You pay your selected provider directly for usage, with model cost estimates available to help you understand your choices. 📖 READ LESS. UNDERSTAND MORE. • Chat with webpages Ask questions about an article, guide or research page. Request a summary, pull out important points or have a difficult passage explained in simpler language. • Ask about selected text Highlight a sentence or paragraph to explain, summarize, translate or rewrite it. Ask a focused question about the part that matters to you. • Chat with PDFs and Word documents Turn a long document into a conversation. Ask about its contents, extract key ideas and follow up on details. Keep documents in your library to return to them later. • Summarize YouTube videos Use an available video transcript to explore the main ideas, request a summary or ask follow-up questions about what was discussed. 🔎 RESEARCH ACROSS TABS AND MODELS • Bring several sources into one question Attach up to six open tabs. Compare product pages, examine different perspectives or combine information from several articles. Answers cite the attached pages. • Compare AI answers side by side Ask multiple models the same question and see their responses together. Compare explanations, approaches and suggestions before deciding what to use. • Switch models as your task changes Move between supported providers and models within your workflow. Use Automatic model selection when you want help choosing a model. ✍️ WRITE WITH MORE CLARITY • Improve a draft where you’re writing Use the AI writing assistant in supported text fields to refine wording and make your message clearer. Review the suggested change before replacing your text. • Rewrite and paraphrase Rework a sentence, shorten a passage or ask for a different tone. Keep control of the final wording. • Translate and explain Translate selected text or ask for an explanation of unfamiliar language, terminology or ideas. 🖼️ ADD VISUAL CONTEXT Paste an image or attach a screenshot of the current tab. Ask a compatible vision model to describe what it sees or answer questions about the image. 📚 BUILD A WORKFLOW YOU CAN REUSE • Save your favourite prompts Keep reusable instructions in your prompt library and insert them with "/". • Return to your conversations Continue a previous discussion with its context instead of starting from scratch. • Continue in another browser With sync enabled, access conversations, images, documents, saved prompts and supported settings in another browser you sign in to. • Open the sidebar from your keyboard Press Alt+O to open Thinkbeside, or Alt+A to ask about selected text. 💡 MADE FOR EVERYDAY WORK Students: explain difficult material and ask questions about readings. Researchers: bring multiple sources into one conversation. Writers: refine drafts, paraphrase passages and explore alternative wording. Professionals: understand documents and prepare clearer messages. Curious readers: explore an unfamiliar topic without leaving the page. 🚀 GET STARTED 1. Add Thinkbeside to Chrome. 2. Create a free Thinkbeside account. 3. Connect your API key for at least one supported provider. 4. Open the sidebar and ask about what you’re working on. Thinkbeside is free to install. An account and your own provider API key are required. AI usage is billed directly by your provider. API access is separate from ChatGPT Plus, Claude Pro and similar subscriptions. Thinkbeside is an independent product and is not affiliated with or endorsed by its supported AI providers. Privacy policy: https://thinkbeside.com/legal#privacy Support: https://thinkbeside.com/contact