Founded
2022
Starting Price
$0
Category
Productivity
Last updated June 29, 2026
About Sider
Sider is an AI assistant that lives in a browser sidebar and desktop app, giving you one interface to chat with multiple leading models including GPT, Claude, Gemini, Grok and DeepSeek. It can summarize and translate web pages and PDFs, generate and edit images, run deep research, and assist with writing on any site you visit.
Pros & Cons
Pros
- Consolidates ChatGPT, Claude, Gemini and other models into one sidebar, eliminating tab juggling
- Lightweight extension that loads quickly and works on virtually every website
- Strong page, PDF, and deep-research summarization with citations and visual reports
- Affordable tiered pricing with a usable free plan
- Available across Chrome/Edge, web, desktop, and mobile with synced chat history
Key Features
Multi-Model AI Sidebar
Access GPT, Claude, Gemini, Grok, DeepSeek and 20+ models in a single sidebar and compare their answers side by side.
Webpage Reading Assistant
Summarize, explain, and ask questions about any web page you are viewing without leaving the tab.
ChatPDF & Document Analysis
Upload PDFs to summarize, translate, and chat with documents, extracting key points from long files.
Deep Research Agent
Run multi-step research queries that gather sources across the web and return cited, structured reports.
Image Creation & Editing
Generate and edit images with built-in AI image tools directly inside the assistant.
Writing Assistant
Draft, rewrite, translate, and improve text on Gmail, Google Docs, social platforms, and other sites.
Browser Agent Automation
Delegate browsing tasks to an agent that can navigate pages and perform actions on your behalf.
Pricing
Free
$0/month
- 30 basic credits per day
- Access to standard AI models
- Webpage and PDF summarizing
- Browser sidebar extension
Basic
$6.70
Best For
Research & summarization
Quickly summarize long articles, PDFs, and run deep research with cited reports while browsing.
Compare AI models
Send one prompt to GPT, Claude, and Gemini at once to compare answers before deciding which to use.
Writing & email
Draft, rewrite, and translate messages directly inside Gmail, Google Docs, and social platforms.
Studying & learning
Ask follow-up questions about any web page or document to understand complex material faster.
