AI-powered browser assistant - Summarize, Explain, Translate, and more
Users
444
+7 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#46K
#39K among extensions
Version
1.0.1
updated 15 Mar 2026
Users
monthly, 9 months
Latest, 16 Oct 2026:444 usersMove the mouse over the chart for any month
Ratings count
monthly, 9 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Cortex
Cortex AI - Your Intelligent Browser Companion
Select any text on any webpage and instantly get AI-powered assistance. Cortex brings the power of advanced AI models directly to your browser.
✨ FEATURES
• Smart Text Selection - Select text anywhere, click the floating icon
• Quick Actions - One-click Summarize, Explain, Translate, or Fix Writing
• Free-form Chat - Ask follow-up questions about selected content
• Beautiful Markdown - AI responses rendered with proper formatting
• Fullscreen Mode - Expand for comfortable reading
• Dark/Light Mode - Automatically matches your system theme
• Multiple AI Models - Choose from 100+ models via OpenRouter
🎯 PERFECT FOR
• Students researching and studying
• Professionals reading reports and documents
• Language learners needing translations
• Writers wanting to improve their text
• Anyone who wants AI assistance while browsing
⚡ KEYBOARD SHORTCUTS
• Cmd/Ctrl + Shift + K - Open Cortex instantly
• Double-tap Cmd/Ctrl - Quick trigger
🔒 PRIVACY FOCUSED
• Your API key stays on your device
• No data sent to our servers
• Conversations stored locally only
📋 REQUIREMENTS
• OpenRouter API key (get free credits at openrouter.ai)
Built with ❤️ for productivity.