Best AI Chrome Extensions in 2026: Top 10 Ranked
TL;DR: The best AI Chrome extensions: Grammarly (writing), ChatGPT sidebar, Perplexity (research), Monica AI (all-in-one), and Merlin (GPT-4 anywhere). All have free tiers.
Top 10 AI Chrome Extensions
| # | Extension | Best For | Price |
|---|---|---|---|
| 1 | Grammarly | Writing everywhere | Free-$12/mo |
| 2 | Monica AI | GPT-4 on any page | Free-$10/mo |
| 3 | Perplexity | AI-powered search | Free |
| 4 | Merlin | ChatGPT sidebar | Free-$15/mo |
| 5 | Sider AI | Multi-model sidebar | Free-$10/mo |
| 6 | Wordtune | Sentence rewriting | Free-$10/mo |
| 7 | Otter.ai | Meeting transcription | Free-$17/mo |
| 8 | SciSpace | Research paper analysis | Free-$12/mo |
| 9 | Compose AI | Email autocomplete | Free |
| 10 | Glasp | Web highlighting + AI summary | Free |
Must-Install Combo
Install Grammarly + Perplexity + one AI sidebar (Monica or Merlin). These three cover writing quality, research, and AI access from any webpage — all for free.
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