Best AI Chrome Extensions for 2026

Our editorial team tested 50+ AI browser extensions. Here are the top picks for productivity, writing, and research.

Top 5 AI Extensions

#1 Pick

AI Sidebar Pro

All-in-one sidebar with 5 AI models. Context-aware, reads any webpage. Best for power users who want everything in one place. Free tier available.

#2 Pick

Sider — Chat with All AI

Multi-model AI sidebar with GPT, Claude, Gemini and DeepSeek. Search, read, and write from any page. 4.9 rating with millions of users.

#3 Pick

Perplexity — AI Companion

Ask anything while you browse. AI-powered search with real-time citations. Great for research and fact-checking. Free with premium tier.

#4 Pick

Grammarly

AI writing assistant with grammar, tone detection and one-click drafts. Excellent for emails and documents. 42M+ users. Free basic plan.

#5 Pick

Monica — All-in-One AI

Multi-model AI assistant with GPT, Claude and Gemini. Chat, write, translate, search and summarize. Featured extension with 4.9 rating.

Comparison Table

FeatureAI Sidebar ProSider AIPerplexity
PriceFreeFreemiumFree
AI Models5+5+1
Page ContextYesYesPartial
Web SummaryYesNoYes
Code ExplainerYesLimitedNo

How to Choose

For Writers

Look for extensions with copywriting features, tone adjustment, and grammar checking. AI Sidebar Pro and Grammarly are top choices.

For Developers

Prioritize code explanation, debugging help, and documentation generation. AI Sidebar Pro's code explainer is excellent for this use case.

For Researchers

Focus on web summarization, citation support, and multi-source analysis. Perplexity and AI Sidebar Pro both offer strong research capabilities.