Sider AI

Overview

Sider AI is a browser sidebar that puts multiple large language models side by side without switching tabs. With over 10 million users, it's one of the most widely adopted AI browser extensions available today. The interface gives you access to GPT-4, Claude, Gemini, Grok, and others from a single panel — you can compare outputs or route tasks to the model that handles them best. Beyond chat, Sider reads whatever page you're currently on. Paste a long article and it summarizes it in seconds; open a YouTube video and it extracts a transcript and key points; upload a PDF and it answers questions from the document. The deep research mode crawls multiple web sources and compiles structured reports automatically. Wisebase, Sider's built-in knowledge layer, lets you save insights and search across them later. Rec Note captures meeting audio and generates live transcripts. For creators working across multiple platforms, Sider's value is consolidation. You don't need separate subscriptions for different AI models, and the browser integration means the tool is available wherever you're already working.

Features

• Multi-model AI chat -- Switch between GPT-4, Claude, Gemini, Grok, and more from a single sidebar
• Page-aware context -- Automatically reads the current webpage and feeds it into your AI conversation
• YouTube summarization -- Extract transcripts and key insights from any YouTube video
• PDF question answering -- Upload PDFs and ask questions about their content directly
• Deep research mode -- Crawls multiple web sources and synthesizes findings into a structured report
• Wisebase knowledge management -- Save, tag, and search AI-generated insights across sessions
• Rec Note meeting transcription -- Captures live audio from meetings and generates speaker-tagged transcripts
• Writing assistant -- Drafts social posts, emails, and captions in your preferred tone
• Image generation -- Create images from text prompts using integrated diffusion models
• Translation support -- Translate text and webpages across 100+ languages
• Browser compatibility -- Works on Chrome, Edge, and Safari
• AI model comparison -- Run the same prompt on multiple models and compare outputs side by side
• Prompt library -- Save frequently used prompts and access them from any webpage
• Mobile companion app -- Access Sider's core features from iOS and Android

Best For

Content creators who need daily AI assistance without subscribing to multiple separate tools, Researchers who want to query articles, PDFs, and YouTube videos with AI in context, Remote workers who attend video calls and need live transcripts and action item summaries, Social media managers drafting captions, hooks, and post copy across platforms, Teams comparing AI model outputs before committing to a single provider

How It Works

Install Sider as a browser extension and it appears as a persistent sidebar on every webpage you visit. The default view is a chat interface where you select which AI model responds — GPT-4, Claude, Gemini, Grok, and others are listed in a dropdown. The active page's content is automatically fed into context, so you can ask questions about what you're reading without copying and pasting. For YouTube videos, Sider intercepts the transcript and makes it available for summarization and Q&A. Deep Research mode runs a multi-source web search, aggregates results, and returns a structured report with citations. Wisebase connects to Notion and other tools to pull in your existing notes as retrieval context. Rec Note activates your microphone during meetings and transcribes in real time, tagging speakers and surfacing action items. All model interactions happen via API calls routed through Sider's infrastructure, and usage counts against the monthly message quota on your plan.