Gemini 3 Pro Browser - Best AI Sidebar for Flow-Based Tasks

Gemini 3 Pro is Google's most advanced AI model, offering superior reasoning, coding, and multimodal capabilities. In Sider, Gemini 3 Pro integrates directly into your browser sidebar, allowing you to chat with it while viewing webpages, analyzing documents, or composing content. Unlike visiting Google's AI Studio where you manually provide context, Sider's Gemini 3 Pro sees what you're viewing and provides context-aware assistance without requiring you to copy-paste or upload files.

Sider offers a free tier that includes access to Gemini 3 Flash with daily usage limits. Premium plans provide unlimited access to Gemini 3 Pro and other models like GPT-5.2 and Claude 4.5, higher usage limits, priority processing, and advanced features. Start free and upgrade when you need more capacity or features.

The key difference is the use case: Google's AI website is designed for "big tasks"—starting projects from scratch, generating code from zero, or complex standalone work. Sider is built for "flow-based tasks"—the continuous reading, writing, researching, and communicating that happens throughout your day. With Sider, Gemini 3 Pro stays in your browser sidebar, reads your current webpage context, integrates into input fields, and provides seamless assistance without breaking your workflow. No tab switching, no file uploads, no copy-pasting.

Absolutely! Sider is designed as a multi-model AI platform. You can switch between Gemini 3 Pro, GPT-5.2, Claude 4.5, Gemini 3.0 Flash, and other models with a single click in the sidebar. You can even compare answers from multiple models side-by-side to get the best response for your task. Use Gemini 3 Pro for complex reasoning, Claude for creative writing, or Gemini 3.0 Flash for quick answers—the flexibility to choose is built into Sider.

With Gemini 3 Pro in Sider, you can: chat while reading any webpage (ask questions about content, summarize articles, analyze data), analyze PDFs and documents without uploading them (extract insights, answer questions, summarize sections), translate webpages and text in 100+ languages, compose and polish emails directly in Gmail, write social media posts, generate code snippets, research topics with context-aware results, and much more—all without leaving your current browser tab.

Yes, your privacy and security are paramount. Sider only processes the content you explicitly share with AI—like highlighting text or asking questions about a webpage. We don't track your entire browsing history or collect data unrelated to your AI interactions. Your conversations are encrypted in transit, and we don't store them unless you explicitly save them to a knowledge base. Sider complies with GDPR and data protection regulations. You can review our detailed privacy policy for complete transparency.

Sider requires an internet connection to access AI models like Gemini 3 Pro, as all AI processing happens in the cloud. However, once installed, the extension runs locally in your browser and doesn't significantly impact your browsing performance or speed. The sidebar and interface work smoothly even during processing, so your browsing experience remains fast and responsive. Some cached content or previously saved conversations may be accessible offline for reference.