Best AI assistant Chrome extensions (2026)
The 20 most-used AI assistants on the Chrome Web Store, ranked by real store users. Listings rated under 3 stars on 20+ ratings are left out. Sidebar assistants that bring ChatGPT, Claude, Gemini, DeepSeek or several models to every page: chat, write, read, summarise.
Top 20 AI assistants, ranked
- 1
Grammarly: AI Writing Assistant and Grammar Checker App
Grammarly for Chrome helps you write with confidence. Get AI support for grammar, clarity, and tone, from first draft to final edit.
≈40M users4.5★ from 43.1K ratingsUpdated 5 days ago9 permissions - 2
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector
Improve your writing - Detect and Humanize AI content, create images, Paraphrase, Check Grammar, AI Chat, and more!
≈6M users4.7★ from 6K ratingsUpdated 4 days ago11 permissions - 3
Sider: Chat with all AI: GPT-5, Claude, DeepSeek, Gemini, Grok
ChatGPT, DeepSeek, Gemini, Claude, Grok all in one AI sidebar, for AI search, read, and write.
≈5M users4.9★ from 115K ratingsUpdated 3 days ago14 permissions - 4
Monica: All-In-One AI Assist & Smartest AI Agent
One stop AI Assistant with GPT, Claude, Gemini: Chat, Write, Translate, Search, Summarize, image generator, video generation
≈3M users4.9★ from 32.3K ratingsUpdated 2 months ago5 permissions - 5
Chat with all AI models (Gemini, Claude, DeepSeek…) & AI Agents | AITOPIA
AI Agent Marketplace & AI Sidebar with all AI models (Gemini, Claude, DeepSeek & more) and hundreds of AI Agents
≈1M users4.9★ from 28.2K ratingsUpdated 3 weeks ago7 permissions - 6
ChatbotsPlace: All-in-One AI Sidebar (ChatGPT, Claude & Gemini)
Access ChatGPT, Claude, Gemini, and Grok in one sidebar. Chat with multiple top-tier AI models without switching tabs or accounts
≈900K users4.8★ from 191 ratingsUpdated 7 days ago2 permissions - 7
MaxAI: Ask AI anything as you browse (GPT, Gemini, Claude, Grok, etc.)
Save time with your AI assistant that helps you read, write, and search faster wherever you work online.
≈700K users4.7★ from 14.5K ratingsUpdated 7 weeks ago8 permissions - 8
AI Grammar and Spell Checker by Ginger
Improve your English communication with Ginger's all-in-one AI spelling and grammar checker!
≈500K users3.8★ from 1.6K ratingsUpdated 12 months ago6 permissions - 9
NoteGPT: YouTube Summary, Chat with AI Assistant, ChatGPT DeepSeek Claude
Summarize YouTube videos and turn transcripts into notes with AI. Generate captions, then translate, copy, or download subtitles.
≈400K users4.9★ from 8.6K ratingsUpdated 7 weeks ago6 permissions - 10
Smart Sidebar: Chat GPT, Claude & DeepSeek
Supercharge Your Browser with the AI Sidebar powered by ChatGPT, Claude Sonnet & DeepSeek AI
≈400K users4.6★ from 2.6K ratingsUpdated 8 weeks ago5 permissions - 11
HARPA AI: Web Automation with ChatGPT, Claude, Gemini, Grok
Free AI sidebar with ChatGPT, Claude, Gemini & DeepSeek. 100+ commands to automate, monitor prices, summarize & write.
≈400K users4.7★ from 3.2K ratingsUpdated 4 months ago13 permissions - 12
Pie Shopping: AI Cash Back and Coupons
Save money effortlessly with Pie Shopping: activate Cash Back, auto-apply coupons, and use our AI side panel for smart deals!
≈300K users4.5★ from 513 ratingsUpdated 6 months ago14 permissions - 13
Liner: ChatGPT AI Copilot for Web&YouTube&PDF
Use ChatGPT directly on the website, even on YouTube! Add AI Copilot and get more done with your personal AI assistant/AI Companion.
≈300K users4.4★ from 6K ratingsUpdated 11 days ago6 permissions - 14
SciSpace: Do hours of research in minutes
Your AI research assistant for understanding scientific literature.
≈300K users4.4★ from 144 ratingsUpdated 3 days ago10 permissions - 15
Black Menu for Google™
The easiest access to the Google universe with Gemini AI and sidebar support
≈200K users4.6★ from 3.8K ratingsUpdated 5 days ago12 permissions - 16
AI Content Detector - Copyleaks
Verify what content was written by a human or an AI chatbot with the AI Content Detector browser extension from Copyleaks.
≈200K users4.1★ from 708 ratingsUpdated 2 weeks ago7 permissions - 17
DeepSider™:AI Sidebar | DeepSeek, Gemini, Claude, GPT
AI sidebar support chat with all AI models (DeepSeek, Gemini, Claude, GPT) for advanced AI search, read, and write.
≈200K users4.8★ from 652 ratingsUpdated 8 days ago3 permissions - 18
AI Sidebar for DeepSeek
Chat with DeepSeek AI from a sidebar on any website. Other AI models are available too. Not affiliated with DeepSeek.
≈200K users4.6★ from 2.2K ratingsUpdated 5 weeks ago4 permissions - 19
Clearly Reader - Your AI Reading Assistant
A browser extension with reader mode for optimal experience. Features copy, translate, speech, and PDF and Markdown export.
≈200K users4.6★ from 1.3K ratingsUpdated 2 weeks ago6 permissions - 20
JustDone: GPT-4o AI Writing Assistant & Grammar Checker
Elevate your writing with JustDone — your all-in-one tool for grammar checking, paraphrasing, AI writing, and more.
≈200K users3.7★ from 272 ratingsUpdated 11 months ago3 permissions
Head-to-head comparisons
- Grammarly vs Quillbot
- Sider vs Monica
- Grammarly vs Monica
- Sider vs Chat with all AI models (Gemini, Claude, DeepSeek…) & AI Agents
- Monica vs Chat with all AI models (Gemini, Claude, DeepSeek…) & AI Agents
- Chat with all AI models (Gemini, Claude, DeepSeek…) & AI Agents vs ChatbotsPlace
- Sider vs ChatbotsPlace
- Monica vs ChatbotsPlace
AI assistants: questions
What is the most popular AI assistant Chrome extension?
Grammarly: AI Writing Assistant and Grammar Checker App is the most used, with ≈40M users and a 4.5-star rating. Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector is next with ≈6M users.
Which AI assistant extension has the best rating?
Of the listings with 100+ ratings, NoteGPT: YouTube Summary, Chat with AI Assistant, ChatGPT DeepSeek Claude rates highest: 4.9 out of 5 from 8.6K ratings.
Are these AI assistants still maintained?
11 of the 20 listed here were updated in the last 30 days. Each card shows how recently it was updated.