Sider AI

by Sider Inc

Freemium

Multi-AI browser sidebar extension with access to 20+ models (GPT-4o, Claude, Gemini). Features group AI chat, deep research, YouTube summarization, translation, and web page analysis. Available for Chrome and Edge.

4.4
out of 5.0 · 5+ reviews
Category Productivity
Platform WebChrome Extension
Last Updated May 14, 2026
Website sider.ai

Overview

Sider AI is one of the most popular AI browser extensions, providing instant access to 20+ AI models through a convenient sidebar on any website. Rather than switching between ChatGPT, Claude, and Gemini in separate tabs, Sider brings them all into a single interface that overlays any webpage you visit.

The extension's standout feature is Group AI Chat, where you can ask one question and get instant responses from multiple AI models side by side. This makes it easy to compare how GPT-4o, Claude 3.5, and Gemini handle the same prompt. Beyond chat, Sider offers deep research with citations, YouTube video summarization, full-page translation, grammar checking, code understanding, and data analysis.

Sider works as a sidebar activated by a small browser button, integrating naturally with Gmail, Google Docs, Twitter, LinkedIn, Reddit, and any other website. It also includes an AI Painter for image generation and File/Link Chat for analyzing documents.

Available as a Chrome and Edge extension, plus desktop and mobile apps. Particularly popular with knowledge workers, researchers, and content creators who want AI assistance without leaving their current workflow.

Pricing

Free
$0 /mo
  • 30 basic credits per day
  • Enough for light, occasional use like text highlights and quick summaries
Basic
$8 /mo
  • 3,600 basic credits and 100 advanced credits per month
  • Access to GPT-4o mini, Claude 3 Haiku, Gemini 1.5 Flash
  • Includes data analysis, YouTube summary, AI text extraction, and file chat
Pro
$16 /mo
  • 12,000 basic credits and 300 advanced credits per month
  • Higher limits for GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro
Unlimited
$25 /mo
  • Unlimited basic credits and unlimited advanced credits (minimum 1,000 GPT-4o/Claude 3.5/Gemini 1.5 Pro guaranteed per month)
  • Best for heavy daily users

Pros & Cons

Pros

Access to 20+ AI models in a single browser sidebar without switching tabs
Group AI Chat compares responses from multiple models side by side
Deep Research tool generates reports with proper citations
YouTube summarization saves significant time for video-heavy research
Works seamlessly on any website including Gmail, Google Docs, and social media
Full-page translation and grammar checking built in
Clean, well-designed interface that doesn't feel intrusive

Cons

Credit-based pricing can be confusing — different models consume credits at different rates
Free plan's 30 daily credits are extremely limited for regular use
Advanced model access requires higher-tier plans
Desktop app has reported bugs with document uploads
Customer support responsiveness has been criticized
Unlimited plan still has fair-use limits on premium models

Reviews