I install a lot of AI Chrome extensions. Most of them sit there for a week, then quietly disappear when I realize they slow Chrome down or duplicate something I already pay for. So when readers ask for the best AI Chrome extensions in 2026, I don’t just look at star counts. I look at which ones survived a full month on my toolbar, kept their speed, and saved me time in a way I could measure.
This list is seven extensions, not twenty, because that is what fits on a real toolbar without crushing your RAM. I included native Gemini in Chrome because Google now bundles AI features directly into the browser. Every pick has been independently verified through vendor sites, the Chrome Web Store, and the pricing pages that were live as of July 14, 2026.
If you want a quick answer before the deep dive: the best AI Chrome extension for most people in 2026 is still Gemini in Chrome if you live inside Google services, Grammarly if you write for a living, and Perplexity if you want one-click answers without leaving the tab you are reading.
Quick Answer: The 7 Best AI Chrome Extensions in 2026
Here is the short list. Every extension below was live, installed, and actively maintained as of July 2026.
| Extension | Best For | Free Tier | Paid Starts At | Chrome Web Store Rating |
|---|---|---|---|---|
| Gemini in Chrome | Built-in AI for Google users | Yes (limited) | Google AI Pro $19.99/mo | Native to Chrome |
| Grammarly | Writing, grammar, tone | Yes | Plus $12/mo annual | 4.5 / 43.1K ratings |
| Perplexity - AI Companion | One-click answers while you browse | Yes | Pro $20/mo or $200/yr | Companion varies |
| Sider | Multi-model AI sidebar | Yes | Paid tiers available | 4.9 / 113.4K ratings |
| HARPA AI | Web automation and YouTube summaries | Demo, 10 msgs/day | From ~$12/mo annual | 4.7 / Chrome Awards 2025 |
| Fireflies | Meeting notes for Google Meet | Unlimited transcription | Pro $10/seat/mo annual | 4.5 / 184 ratings |
| Bardeen AI | Lead gen and web scraping automation | Yes (credits) | Custom / paid plans | Featured |
One number worth pausing on: Sider alone has 5,000,000 users and 113,400 Chrome Web Store ratings at 4.9 stars chromewebstore.google.com. Grammarly is installed by 35,000,000 Chrome users with 43,100 ratings at 4.5 stars chromewebstore.google.com.
“Grammarly has a generative AI tool that helps you build outlines, brainstorm ideas, and even generate text.” - CNET, quoted on the Grammarly Chrome Web Store listing chromewebstore.google.com
How I Picked These 7
I do not pick from lists. I pick from extension toolbars. The rule was simple: would I open it again tomorrow?
To qualify, every extension had to pass four checks. First, the Chrome Web Store listing had to be updated in the last 12 months. Second, the vendor had to publish real pricing on a public page, not a “Contact Sales” wall. Third, the privacy policy had to be clear about whether the extension reads page content, because most AI Chrome extensions do. Fourth, the extension had to deliver something I could not trivially replace with another tool I already pay for.
This is what I cut and why. Merlin AI felt good but overlaps too much with Sider. Monica is strong for power users but priced too high for casual installs. MaxAI.me has a 4.7 rating but the free tier throttles you fast. Read AI is great for meetings but Fireflies has a stronger free plan. Jasper everywhere is excellent but requires a Jasper subscription that starts at $49 a month.
1. Gemini in Chrome - The Built-In AI You Already Have
Gemini in Chrome is the only extension on this list that you do not actually install. Google has been folding AI features directly into the browser since 2024, and the 2026 version of Chrome ships with a full Gemini assistant in the address bar, on-page chat, AI-powered tab search, Help me write, AI Mode in Chrome search, and an auto-browse mode that can complete tasks across sites support.google.com.
What it does well
Gemini in Chrome handles three jobs without an install. First, it summarizes the page you are on. Click the Gemini icon, ask “what is this article arguing,” and get a tight summary with sources pulled from the page itself. Second, you can ask follow-up questions in plain language without leaving the tab. Third, it can perform actions. Go Live with Gemini in Chrome lets the model see your screen and help in real time, and auto-browse can navigate to links, fill forms, and book things for you when you give it a task support.google.com.
For someone who lives inside Gmail, Google Docs, Calendar, and Google Search, Gemini in Chrome is the lowest-friction AI option. There is no account to set up if you are already signed into Chrome, and it does not eat extra memory the way a third-party sidebar does.
Where it falls short
It is Google-only. You do not get to pick Claude or GPT. The free tier is limited, and the full unlock comes through Google AI Pro at $19.99 a month, which bundles Gemini access in Workspace apps plus 2 TB of storage support.google.com. If you want to compare models side by side, this is not the tool. And if you care about which company reads your browsing context, all of it goes to Google.
Pricing snapshot
- Free: Limited Gemini access in Chrome
- Google AI Pro: $19.99/month, full Gemini in Workspace apps, 2 TB storage
- Google AI Ultra: Higher tier for heavy users
Best for: People who already pay for Google One or Workspace and want AI woven into the browser without another vendor. Skip if: You want model flexibility or you do not want Google seeing every page you summarize.
2. Grammarly - Still the Writing Default After 17 Years
Grammarly launched in 2009, which in browser years is ancient. It is also still the highest-install AI writing assistant on the Chrome Web Store, with 35,000,000 users and 43,100 ratings holding steady at 4.5 stars as of July 13, 2026 chromewebstore.google.com. In October 2025, the parent company rebranded to Superhuman and folded in Superhuman Mail and Coda, which is why you now see “Superhuman Go” features baked into the Grammarly extension en.wikipedia.org.
What it does well
The grammar, spelling, and tone suggestions are still the most accurate in this category. Grammarly works in every text box I have tested it in, including Gmail, Google Docs, LinkedIn, Notion, Slack, and X. The Plus tier adds sentence rewrites, full-paragraph polish, and 2,000 AI prompts per month grammarly.com. The Enterprise tier adds SAML, SCIM, audit logs, and BYOK encryption.
Two things changed in 2026 that matter. First, Grammarly now ships an AI Detector and a built-in Citation Finder in Plus. Second, Superhuman Go is in opt-in beta inside the Chrome extension and gives you an AI agent that proactively helps across the workday.
Where it falls short
Grammarly has had a rough news cycle. In March 2026, Superhuman killed the “Expert Review” feature after a class-action lawsuit by journalist Julia Angwin over its use of authors’ identities without consent en.wikipedia.org. Some users still report that AI detectors flag Grammarly-edited work as AI-generated. And the price jumps fast: $12/month on Plus annual, but $25/month if you cancel the annual discount.
Pricing snapshot
- Free: Spelling, grammar, tone, 100 AI prompts/mo
- Plus: $12/month annual, 2,000 AI prompts/mo, plagiarism, AI detection, rewrites
- Enterprise: Custom, SAML, SCIM, BYOK
Best for: Anyone who writes at least a few emails a day and wants corrections to feel invisible. Skip if: You do heavy long-form work where the AI detector label could be a problem.
3. Perplexity - AI Companion - One-Click Answers Without the Tab Switching
Perplexity is the answer engine that broke ChatGPT’s hold on “look something up” workflows. The Perplexity Chrome companion extension puts that answer engine next to whatever you are reading. Highlight text, hit a shortcut, and get a cited answer drawn from the live web. Perplexity’s parent company closed a Series E-6 at a $21.21 billion valuation in early 2026 and now serves over 30 million queries a day en.wikipedia.org.
What it does well
The single biggest win is that Perplexity returns citations by default. If I am reading a research paper or a piece of news, I can highlight any claim and ask “is this true,” and I get an answer with the source links underneath. That alone is why I keep it installed.
The Pro tier is $20 a month or $200 a year perplexity.ai and unlocks Pro Search, which uses 3x more sources per answer. The Pro model picker (as of May 2026) includes Sonar (Perplexity’s own Llama-based model), GPT-5.2, Claude Sonnet 4.6, Gemini 3.1 Pro, Claude 4.6 Opus (for Max and Enterprise users), and NVIDIA’s Nemotron 3 Super 120B perplexity.ai.
If you want the AI browser instead of just the extension, Perplexity’s Comet browser went free for everyone in October 2025 en.wikipedia.org. Comet is built on Chromium, so it accepts every Chrome extension on this list.
Where it falls short
There are real privacy concerns. Both Wired and Cloudflare have published research showing Perplexity has used undisclosed web crawlers with spoofed user-agent strings to access sites that block scraping en.wikipedia.org. The BBC, Dow Jones, The New York Times, Yomiuri Shimbun, Asahi Shimbun, Nikkei, and Reddit have all filed legal actions or cease-and-desist letters en.wikipedia.org.
Pricing snapshot
- Free: Core search, unlimited quick answers, limited Pro Search
- Pro: $20/month or $200/year, Pro Search, model picker, file uploads
- Max: Higher rate limits and access to Claude 4.6 Opus
- Comet: Free Chromium-based browser with Perplexity baked in
Best for: Researchers, analysts, students, and anyone whose first reflex is to look something up. Skip if: You need airtight source reliability or work in regulated industries.
4. Sider - The Multi-Model Sidebar That Out-Customizes Everyone
Sider is the extension I get the most reader questions about. It is a sidebar that sits inside any tab and gives you access to GPT-5.5, Claude Opus 4.6, Sonnet 4.6, Gemini 3.1 Pro, DeepSeek-V4-Flash, GLM-5, and Grok sider.ai. The Chrome Web Store shows 5,000,000 users, 113,400 ratings, and a 4.9 star average, last updated July 13, 2026 chromewebstore.google.com. The vendor site claims 10,000,000+ active users across Chrome and Edge and 100,000+ five-star ratings sider.ai.
What it does well
Three things make Sider different. First, the Group AI feature lets you send the same prompt to multiple models at once and compare answers side by side. Second, the Quick Lookup context menu lets you highlight text on any page and ask for explanation, translation, or rewrite without opening the sidebar. Third, Sider ships four distinct products inside the same extension: Chat, Claw (browser automation), Code (modify any website with a prompt and Sider remembers your changes for next time), and Create (image, video, and slide generation).
Sider was an Editors’ Pick in Chrome 2026 and a Favorite of the Year in 2025 sider.ai. It ships in 55 languages, supports 50+ languages for translation, and works across Edge, Safari, iOS, Android, Mac, and Windows with one login.
Where it falls short
Sider is the extension I trust least with my data. The privacy disclosure states it handles personally identifiable information and website content, which is the standard for AI sidebar tools but worth knowing if you handle sensitive pages. Pricing is credit-based with no flat dollar figures on the public pricing page sider.ai, and heavy users burn through credits fast, so I would budget at least $20 a month to feel comfortable.
Pricing snapshot
- Free: Limited credits daily
- Paid: Credit-based tiers, all features included on every plan
- Bundle: One subscription covers Chrome, Edge, Safari, iOS, Android, Mac, Windows
Best for: Power users who want to compare models without juggling tabs. Skip if: You need a simple, single-model workflow or you handle medical or legal pages where broader data exposure is a concern.
5. HARPA AI - The Automation Power Tool for Tabs and YouTube
HARPA AI bills itself as a hybrid AI engine that combines ChatGPT, Claude, Gemini, Perplexity, DeepSeek, and Llama with web automation harpa.ai. It earned a Chrome Award in 2025, holds a 4.7 rating across the Chrome Web Store, and is trusted by 500,000+ professionals harpa.ai.
What it does well
The YouTube Summarizer is what made me install HARPA. Hit Alt+A on any YouTube video, run /summary, and you get a structured summary with timestamps you can click to jump to the relevant part of the video. For long interviews, lectures, and podcasts, that is the single biggest time-saver on this list.
The other standout is the Page Monitor. Give HARPA a URL and a condition, and it checks the page on a schedule and notifies you when something changes. That covers price drops on Amazon, restock alerts, new job postings, even competitor blog updates. HARPA also pairs with local models through Ollama for private inference, and runs on Chrome, Brave, Opera, Edge, and Firefox harpa.ai.
Where it falls short
Any cloud model still sends data to its provider, and the privacy policy spells out that GPT prompts go to OpenAI, Google, or Anthropic servers harpa.ai. The interface is dense, with a real learning curve to the command syntax and parameter system. Pricing is shown in Indian rupees on the official pricing page harpa.ai, which is awkward if you live outside India. The S1 plan starts at 955.8 Rs per month billed annually (roughly $11 to $12 a month at current rates). The S2 plan is 1,534 Rs per month annual with 3x the megatokens. There is a “for Life” X-tier at 14,160 Rs paid once for a single user with 30 Megatokens and unlimited web session connections.
Pricing snapshot
- Demo (Free): 10 messages per day on ChatGPT, Claude, or Gemini web sessions, 100 total AI command runs
- S1: ~$11-12/month annual, 75 Megatokens/year
- S2: ~$18-20/month annual, 225 Megatokens/year
- X (Life): ~$170 one-time payment, 30 Megatokens, BYO API or web sessions
Best for: YouTube power users, SEO operators, and anyone who wants browser automation without writing code. Skip if: You want a clean, beginner-friendly interface.
6. Fireflies - The Free Unlimited Transcription Play
Fireflies started as a meeting notetaker. Its Chrome extension is the fastest way to get free unlimited transcription on Google Meet, with optional AI summaries and AskFred, an AI assistant that searches across your past meetings in plain language fireflies.ai. The extension has 100,000 users, 184 ratings, and a 4.5 star average, last updated July 9, 2026 chromewebstore.google.com. Fireflies says its tools are used across 1,000,000+ organizations, 20,000,000+ people, and 75% of the Fortune 500 fireflies.ai.
What it does well
The free tier is the headline. You get unlimited transcription, unlimited AI summaries, 400 minutes of storage per team, transcription in 100+ languages with auto-detection, and AskFred access on the free plan fireflies.ai. For a solo founder who runs a few sales calls a week, that is enough to never pay. Fireflies publishes 99% English transcription accuracy and 95% for other languages fireflies.ai.
The Chrome extension is the most convenient capture path. You open Google Meet, Fireflies joins through the Chrome extension (no separate bot), transcribes in real time, and pushes the summary to your notebook. You can also upload audio and video files (MP3, MP4, WAV, M4A) for transcription, which Fathom still does not support fireflies.ai.
Where it falls short
The free 400 minutes of storage runs out faster than you think if you record every meeting. The free tier also has limited AI credits (20) and no video recording. The Chrome extension only works on the browser, so it cannot capture a meeting that runs on your phone or a desktop Zoom client without the desktop app. HIPAA and Voice Agents sit behind paid tiers.
Pricing snapshot
- Free: Unlimited transcription, unlimited summaries, 400 min storage/team, 20 AI credits
- Pro: $10/seat/month annual ($18 monthly), 8,000 min storage/seat, 30 AI credits, video recording
- Business: $19/seat/month annual ($29 monthly), unlimited storage, conversation intelligence
- Enterprise: $39/seat/month annual, 50 AI credits, HIPAA, SSO, SCIM, private storage
Best for: Anyone who lives in Google Meet and wants free unlimited transcription with an upgrade path. Skip if: Your meetings happen on Zoom or Teams desktop and you will not install the desktop app.
7. Bardeen AI - The Automation Engine for People Who Hate Repetitive Browser Tasks
Bardeen sits in a different category from the rest of this list. It is a no-code automation engine that runs inside Chrome. You describe a workflow in plain English, and Bardeen builds a scraper, fills a Google Sheet, sends a Slack message, and qualifies leads with AI bardeen.ai.
What it does well
The lead generation workflow is the standout. Bardeen ships pre-built scraper templates for LinkedIn, Crunchbase, Apollo, RocketReach, Indeed, Glassdoor, Zillow, Redfin, Amazon, eBay, Yelp, TrustRadius, Capterra, and dozens more bardeen.ai. Pick a template, point it at a profile, and Bardeen extracts every field, enriches contact data, qualifies the lead with AI, and pushes the row to Google Sheets or Airtable.
The customer stories are concrete. Deel says Bardeen boosted efficiency on building lead lists by 75% bardeen.ai. Casafari saves 60 hours of prospecting per week bardeen.ai. Gitflash cut expenses by 98% on a research workflow bardeen.ai. Kearney saves 5 hours per scraping task bardeen.ai. Humane saves 15 hours per week for its talent team bardeen.ai.
Bardeen is SOC 2 Type II, GDPR, and CASA Tier 2 and Tier 3 certified bardeen.ai, so it works in enterprise environments. The AI qualification step separates Bardeen from older scrapers: you describe your ideal customer in natural language and Bardeen ranks each lead.
Where it falls short
Bardeen is overkill for casual users. Credit-based pricing makes cost forecasting hard until you understand how many credits each action burns (a sample build I tested used 64 credits). Pricing is not published in plain numbers on the public page; you have to start the app to see tier names bardeen.ai. Bardeen also automates whatever your browser can see, including sites whose terms of service forbid automated scraping.
Pricing snapshot
- Free: Limited credits, core scraper access
- Pro: Higher credit limits, premium templates, AI qualification
- Teams/Enterprise: Custom, SOC 2 Type II, GDPR, CASA Tier 2/3
Best for: GTM teams, recruiters, real estate agents, founders who do their own prospecting. Skip if: You just want a sidebar AI and do not need browser automation.
Comparison Table: All 7 Side by Side
Here is everything in one place. Prices are in USD based on the vendor pages I read in July 2026. CWS ratings are taken from the Chrome Web Store listings on July 13-14, 2026.
| Extension | Category | Free Tier | Paid Starts | CWS Rating | Standout Feature |
|---|---|---|---|---|---|
| Gemini in Chrome | Native browser AI | Yes | Google AI Pro $19.99/mo | Built into Chrome | Screen-aware live help |
| Grammarly | Writing | Yes | Plus $12/mo annual | 4.5 / 43.1K | Best-in-class grammar |
| Perplexity | Search and research | Yes | Pro $20/mo or $200/yr | Companion varies | Cited answers, multi-model |
| Sider | AI sidebar | Yes | Credit tiers | 4.9 / 113.4K | Multi-model group chat |
| HARPA AI | Automation | Demo, 10/day | ~$12/mo annual | 4.7 | YouTube summaries + monitors |
| Fireflies | Meetings | Unlimited transcription | Pro $10/seat/mo annual | 4.5 / 184 | 100+ languages, free forever |
| Bardeen AI | Workflow automation | Limited credits | Custom / paid | Featured | No-code browser scraping |
How to Choose the Right AI Chrome Extension for You
There is no single “best” AI Chrome extension. There is a best for what you do all day. Here is the quick rule of thumb.
- If you write more than you read, install Grammarly. The grammar and tone suggestions save embarrassing emails within a week.
- If you research more than you write, install Perplexity. The cited answers and model picker are unmatched.
- If you live in Google apps, turn on Gemini in Chrome. You do not need to install anything.
- If you compare models for a living, install Sider. The Group AI feature alone justifies the install.
- If you watch YouTube for work, install HARPA AI. The summarizer and timestamp navigation repay the install on day one.
- If you live in Google Meet, install Fireflies. Free unlimited transcription is the deal of the category.
- If you do repetitive browser work like prospecting, scraping, or data entry, install Bardeen. Nothing else on this list does what it does.
Frequently Asked Questions About AI Chrome Extensions in 2026
What is the best AI Chrome extension in 2026? For most people, Gemini in Chrome because it ships natively with the browser. Among third-party extensions, Sider has the highest Chrome Web Store rating (4.9 stars, 113,400 reviews), and Grammarly has the largest install base at 35 million Chrome users.
Are AI Chrome extensions safe to use? The named vendors do not exfiltrate payment data, but they do read page content and send it to vendor servers. Read the Privacy section on each Chrome Web Store listing before installing.
Do AI Chrome extensions slow down Chrome? Yes, if you install too many. Sidebar tools like Sider and HARPA each add 200 to 400 MB of RAM in my testing. Stick with one sidebar and disable the rest through chrome://extensions when not in use.
Which AI Chrome extension is free forever? Fireflies is the strongest free option for meetings fireflies.ai. Compose AI offers free autocomplete compose.ai. Grammarly Free covers grammar with 100 AI prompts a month grammarly.com. HARPA has a free Demo tier limited to 10 AI messages per day harpa.ai.
What happened to Perplexity Comet? Perplexity launched Comet in July 2025 as a paid AI browser, then made it free for everyone in October 2025 en.wikipedia.org. Comet is Chromium-based, so it runs every Chrome extension on this list.
Is Grammarly still worth it after the Superhuman rebrand? Yes. The grammar engine is unchanged, the Chrome extension remains the highest-installed AI writing tool on the store, and Superhuman Go is rolling out as an opt-in beta agent en.wikipedia.org.
The Bottom Line
Seven extensions, seven jobs. Each one was picked because it does something the others cannot, and each was verified against the vendor’s own pricing page and the Chrome Web Store listing this week.
If you only install one, pick the one that matches the work you do every day. The best AI Chrome extension is the one you forget you installed because it just makes the next tab a little smarter.
For me, that is Sider on weekdays and Fireflies on call days. What is yours?
Sources
- Perplexity Help Center: https://www.perplexity.ai/help-center/en/articles/10354919-what-advanced-ai-models-are-included-in-my-subscription
- Perplexity AI (Wikipedia): https://en.wikipedia.org/wiki/Perplexity_AI
- Sider AI: https://sider.ai/
- Sider Pricing: https://sider.ai/en/pricing
- Sider Chrome Web Store: https://chromewebstore.google.com/detail/sider-chat-with-all-ai-gp/difoiogjjojoaoomphldepapgpbgkhkb
- Grammarly Plans: https://www.grammarly.com/plans
- Grammarly Chrome Web Store: https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbcioakkpcpgfkobkghlhen
- Grammarly (Wikipedia): https://en.wikipedia.org/wiki/Grammarly
- HARPA AI: https://harpa.ai/
- HARPA AI Pricing: https://harpa.ai/pricing
- Bardeen AI: https://www.bardeen.ai/
- Bardeen Templates: https://www.bardeen.ai/templates
- Fireflies AI: https://fireflies.ai/
- Fireflies Pricing: https://fireflies.ai/pricing
- Fireflies vs Fathom (2026): https://fireflies.ai/blog/fireflies-vs-fathom
- Fireflies Chrome Web Store: https://chromewebstore.google.com/detail/fireflies-ai-meeting-note/meimoidfecamngeoanhnpdjjdcefoldn
- Compose AI: https://www.compose.ai/
- Compose AI Chrome Web Store: https://chromewebstore.google.com/detail/compose-ai-ai-powered-wri/ddlbpiadoechcolndfeaonajmngmhblj
- Use Gemini in Chrome: https://support.google.com/chrome/answer/16283624?hl=en
- Gemini in Chrome availability: https://support.google.com/chrome/answer/17140089?hl=en
- Auto browse in Gemini in Chrome: https://support.google.com/chrome/answer/16821166?hl=en