AI Sidebar — ChatGPT, Claude, Gemini — 無料・無制限

Chrome用のAIサイドバー＆AIアシスタント。ChatGPT、Claude、Geminiをサイドパネルでまとめて利用。完全無料、無制限で使えます。

AI Sidebar — ChatGPT, Claude, and Gemini in one Chrome side panel. 100% free. Unlimited usage. Stop juggling browser tabs. AI Sidebar is the all-in-one AI assistant for Chrome that puts ChatGPT, Claude, and Google Gemini right inside your browser's side panel — so you can chat with any AI model without ever leaving the page you're working on. No sign-up for the extension. No paywall. No usage caps from us. You simply sign in to the AI chatbots you already use, and they open in a clean, distraction-free sidebar. 🚀 What you get • ChatGPT in your sidebar — full OpenAI ChatGPT, including GPT-4 and GPT-5 if you're signed in • Claude in your sidebar — the official Claude AI from Anthropic, models included • Gemini in your sidebar — Google Gemini, right next to any tab • One-click screenshot to AI — capture the current page and paste it straight into the chat as an image • Per-chat visibility toggles — hide the AIs you don't use • Native Chrome Side Panel — lives beside your tab, not on top of it • Works on every website — research, read, write, or code with the AI still visible • Multi-language UI — translated into Spanish, French, German, Portuguese, Japanese, Chinese, Korean, Russian, Hindi, Italian, and Arabic 💸 Why "FREE & Unlimited"? This extension doesn't charge you and doesn't rate-limit you. The only limits are whatever your own ChatGPT, Claude, or Gemini account has. Free tier of each AI? You get the free tier. Paid plan? You get the paid plan. We never get in the way. 🎯 Perfect for • Students researching and summarizing articles • Writers drafting, editing, and rewriting with AI • Developers getting coding help without tab-switching • Marketers generating copy and brainstorming • Anyone who wants to compare answers across ChatGPT, Claude, and Gemini side by side ⚡ How it works Install the extension (free, takes one click) Pin it to your Chrome toolbar Click the icon on any page to open the AI side panel Pick ChatGPT, Claude, or Gemini from the sidebar nav Sign in to the AI the first time — your session is remembered Chat away while you browse, read, or work 🔒 Privacy Your chats go directly between you and the AI provider (OpenAI, Anthropic, Google). We don't proxy your conversations, we don't collect your prompts, we don't run analytics on what you type. The extension stores only your tiny UI preferences (which AIs you want visible) locally in Chrome. 🌐 Supported AI models ChatGPT (GPT-4o, GPT-4, GPT-5, o1) • Claude (Opus, Sonnet, Haiku) • Gemini (1.5 Pro, 2.0 Flash, and newer as Google ships them). You always get whatever model your signed-in account has access to. 🤔 FAQ Is this really free? Yes — the extension is free forever, and it does not charge for usage. Do I need an API key? No. You use the regular web versions of ChatGPT, Claude, and Gemini, signed in to your own accounts. No API setup. Does it work with the free version of each AI? Yes. Free, Plus, Pro, Team — whatever plan you have on the AI's website, you get inside the sidebar. Why do I need to sign in inside the sidebar? Because the extension opens the real ChatGPT / Claude / Gemini websites in a side panel. Your sessions are handled by those providers, not by us. Can I use it on any website? Yes. The side panel sits next to whatever page you're browsing. Does it slow down Chrome? No. The AI loads only when you open its panel.