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 is one of the most widely adopted AI browser extensions available today. The interface gives you access to GPT-5 mini, GPT-5.4, Claude Haiku 4.5, Claude Sonnet 4.5, Gemini 2.5 Flash, Gemini 2.5 Pro, Grok 4, DeepSeek V3.1, 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 are 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. Scholar Research adds an academic layer for sourcing papers. Wisebase lets you save insights and search across them later. Rec Note captures meeting audio and generates live transcripts. AI Slides and AI Web Creator extend Sider into presentation and web-building territory. For creators working across multiple platforms, Sider consolidates what would otherwise require multiple separate subscriptions.

Features

• Multi-model AI chat -- Switch between GPT-5 mini, Claude, Gemini, Grok, DeepSeek, 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
• Scholar Research -- Academic-focused research mode for sourcing papers and studies
• 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
• AI Slides -- Generate presentation slides with AI
• AI Web Creator -- Build web pages with AI assistance
• Writing assistant with Canvas -- Draft and refine content in a dedicated writing environment
• Image generation -- Create and edit images using Nano Banana Pro, Seedance 1.5 Pro, GPT-image, and more
• Video tools -- AI Video Shortener and audio-to-text transcription
• Translation support -- Translate PDFs, images, and webpages across 100+ languages
• Browser integration -- One-click summarization, translation, YouTube subtitle translation, code explanation, and email reply
• AI model comparison -- Run the same prompt on multiple models and compare outputs side by side
• Data Analysis -- Analyze datasets directly in the chat interface
• Artifacts -- Generate and preview code, charts, and interactive outputs inline

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-5 mini, Claude Haiku 4.5, Gemini 2.5 Flash, Grok 4, DeepSeek V3.1, and others are listed in a dropdown. The active page content is automatically fed into context, so you can ask questions about what you are 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. Scholar Research focuses the same pipeline on academic sources. Wisebase connects to your saved knowledge for 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 infrastructure, and usage counts against the Basic, Advanced, or Elite Credit quota on your plan.

Frequently Asked Questions

Is Sider AI free to use?

Sider has a freemium model with limited free access. Paid plans start at $8.3/month (Basic, billed $99/year) and go up to $24.9/month (Plus) and $133.3/month (Ultra). The Basic plan includes 3,600 Basic Credits, 200 Advanced Credits, and 80 Elite Credits per month. A student discount of 45% is also available.

Which AI models does Sider support?

Sider supports GPT-5 mini, GPT-5.4, Claude Haiku 4.5, Claude Sonnet 4.5, Claude Sonnet 4, Claude Opus 4.1, Gemini 2.5 Flash, Gemini 2.5 Pro, Grok 4, and DeepSeek V3.1. The model list updates as new releases become available. You switch between models from a dropdown inside the sidebar without leaving the current page.

Does Sider work with YouTube?

Yes. When you open any YouTube video, Sider automatically extracts the transcript and lets you summarize, ask questions, or pull out key points. This works for most videos with auto-generated or creator-uploaded captions.

Is my data private when using Sider?

Sider routes prompts through its own infrastructure before passing them to underlying AI providers. The company states it does not train models on user data, but queries do pass through Sider servers. Review their privacy policy if you handle sensitive information.

What browsers does Sider support?

Sider works on Chrome, Microsoft Edge, and Safari. Install from the respective browser extension stores. A companion mobile app is also available for iOS and Android.