Best AI Browsers in 2026: 9 AI Browsers and Assistants Compared

Table of contents

• Quick picks
• How AI browsers work
• 1. Comet, best AI browser overall
• 2. Gemini in Chrome, best if you use Chrome
• 3. Dia, best for Mac knowledge work
• 4. Microsoft Edge with Copilot, best for Windows users
• 5. Opera Neon, best for connecting your own AI agents
• 6. Fellou, best for automating multi-step web tasks
• 7. Brave Leo, best for privacy
• 8. Genspark AI Browser, best for on-device AI
• 9. Arc Search, best AI browser on mobile
• Prefer your current browser? Use an AI extension
• What happened to ChatGPT Atlas?
• Comparison table
• How to choose an AI browser
• FAQ

An AI browser puts an assistant next to every tab. It reads the page you are on, answers questions about it, compares what you have open and, in the newer agentic browsers, clicks through websites to finish tasks for you. In the year since Perplexity, The Browser Company, Opera and OpenAI launched dedicated AI browsers, the field has already been reshuffled: OpenAI shut ChatGPT Atlas down on 9 August 2026, Opera made Neon a free download, and Google and Microsoft built their assistants into Chrome and Edge.

This guide compares nine ways to get an AI browser in 2026: dedicated AI browsers such as Comet, Dia, Opera Neon, Fellou and Genspark's browser, the AI built into Chrome, Edge and Brave, and Arc Search on your phone. They differ most in three things: which platforms they run on, whether the AI is free or paid, and how far their agents will act on your behalf.

Every browser below has a full review on ToolChase, and scores come from our 8-parameter methodology. Prices and platforms are as shown on each linked review, checked on the vendor's own site in September 2026. We did not run the same tasks in every browser for this guide, so the order reflects documented features, platform reach and value.

Quick picks

• Best overall: Comet, free on Mac, Windows, iOS and Android, with an assistant that works across your tabs
• Best if you use Chrome: Gemini in Chrome, Google's assistant inside Chrome, with Google apps and a US preview of auto browse
• Best for Mac knowledge work: Dia, AI across your tabs and work tools, from $20 a month
• Best for Windows users: Microsoft Edge with Copilot, a sidepane, Journeys and tasks completed with your approval
• Best for connecting your own agents: Opera Neon, a free download with an MCP connector and CLI, and a $19.90 Standard plan for Neon's agents
• Best for automating multi-step tasks: Fellou, Deep Action and Deep Search, with a free plan and Plus at $19 a month
• Best for privacy: Brave Leo, no account needed, and chats are not retained or used for training
• Best for on-device AI: Genspark's AI Browser, local models at no cost and an MCP Store with more than 700 tools
• Best on mobile: Arc Search, Browse for Me answer pages, free on iOS and Android

How AI browsers work

AI browsers combine a few capabilities, and the browsers here mix them in different proportions.

An assistant that reads the page. Every browser in this guide can summarise the page you are on and answer questions about it without copy and paste. The better ones read several tabs at once, so you can ask them to compare products or sources.

Agents that act. Agentic browsers go a step further and carry out tasks: opening sites, clicking, filling in forms and collecting results. Comet, Opera Neon, Fellou and Genspark's Autopilot Mode work this way, Gemini in Chrome's auto browse is in preview, and Copilot in Edge completes tasks with your approval before anything is finalised.

Connections to your tools. Some browsers pull context from your accounts: Gemini in Chrome from Google apps, Dia from tools like Slack, Notion and your calendar, and Opera Neon and Genspark through MCP, the open protocol for connecting AI tools.

The risk to know about. An agent that reads web pages can be steered by instructions hidden in them, a problem called prompt injection. Supervise agents on logged-in accounts, and do not leave them alone in banking or other sensitive sites.

1. Comet, best AI browser overall

Comet is Perplexity's browser, and since 2 October 2025 it has been free for everyone on Mac, Windows, iOS and Android, the widest reach of any AI browser here. The Comet Assistant works on whatever you have open: it compares how different outlets cover a story, turns a syllabus into a study plan, drafts email replies from what is on screen, and carries out small multi-step tasks such as product research and shopping.

Search answers come from Perplexity, with sources, so Comet suits anyone who already likes Perplexity. The only paid add-on is Comet Plus, $5 a month on its own and included with Perplexity Pro and Max, which unlocks premium content from Perplexity's publisher partners.

Watch out for: agentic browsing is still early, so supervise the assistant on sensitive accounts, and Comet's value is highest if you already rely on Perplexity for search.

ToolChase Score: 4.5/5 · Read the full Comet review

2. Gemini in Chrome, best if you use Chrome

If you do not want to switch browsers, Gemini in Chrome brings Google's assistant into the one you probably already use. Click the Gemini icon or use your keyboard shortcut on Windows, Mac or a Chromebook Plus, and it summarises pages, answers questions across your open tabs and talks things through with Gemini Live. It also works with Google apps, so it can find a flight time in Gmail, check it in Google Flights and draft a message without leaving the page.

Google's requirements list no subscription for Gemini in Chrome itself. Its agentic feature, auto browse, which books appointments and completes other tasks on websites for you, is rolling out first in preview to Google AI Pro and Ultra subscribers in the US.

Watch out for: availability varies by region, language and account type, work accounts need an administrator to enable it, and it does not work in Incognito mode.

ToolChase Score: 4.2/5 · Read the full Gemini in Chrome review

3. Dia, best for Mac knowledge work

Dia comes from The Browser Company of New York, the makers of Arc, and is the most polished pick for knowledge work on a Mac. Ask Dia answers questions about any page and can draw on the tools you connect, such as Slack, Notion, your calendar and Google Workspace, and the top plan adds a daily Morning Brief, meeting prep and reports and decks built from your context.

The browser itself is free, with profiles, split view and a built-in ad and tracking blocker, but every AI feature is paid: Better Answers costs $20 a month and Better Days $100 a month, and new users get a 14-day trial of Better Days with no credit card.

Watch out for: Dia runs only on Macs with Apple silicon and macOS 14 or later, and usage is metered in Tasks, which makes allowances hard to predict.

ToolChase Score: 4.2/5 · Read the full Dia review

4. Microsoft Edge with Copilot, best for Windows users

Windows users already have an AI browser, because Microsoft Copilot is built into Microsoft Edge. It opens in a sidepane beside the page or on a Copilot new tab page, summarises and compares your open tabs, and groups your browsing into Journeys you can pick up later. With your approval it can act for you, searching, comparing and filling in forms to complete tasks such as bookings, and Copilot Vision lets you talk about what is on screen and hear the answers.

Copilot is part of Edge on the desktop and in the Edge mobile app. Microsoft's paid Copilot plans are covered in our Microsoft Copilot review.

Watch out for: Copilot's memory and personalisation learn from what you do, so check the privacy controls, which let you switch features off and clear your history.

ToolChase Score: 4.2/5 · Read the full Microsoft Copilot review

5. Opera Neon, best for connecting your own AI agents

Opera Neon is Opera's agentic browser for Windows 11 and macOS 14 or newer, and since August 2026 it has been a free download. The free plan is aimed at people who already use AI agents: an MCP connector and the Opera Browser CLI let a Claude or ChatGPT session, for example, work inside a real browser, alongside Opera extras such as the built-in ad blocker and free VPN.

The Standard plan, $19.90 a month and cancellable any time, switches on Neon's own agents: Neon Chat, Do for actions on websites, Make for creation workflows, deep research and a 1-Minute research agent, plus Tasks, Cards and a choice of models such as GPT, Claude and Gemini.

Watch out for: Opera still calls Neon experimental, and the free plan includes none of Neon's own AI features.

ToolChase Score: 4.0/5 · Read the full Opera Neon review

6. Fellou, best for automating multi-step web tasks

Fellou is built for handing off work. Give it a goal and its Deep Action agent plans the steps and works through them while you watch: researching a topic across many sites, scraping data, filling in forms or, with Computer Use, working with files on your machine. Deep Search handles in-depth research, and scheduled tasks rerun jobs automatically.

It runs on Windows and macOS, including Intel Macs. The free plan includes a 1,000 Spark new-user bonus, which Fellou estimates at about 4 tasks, and chat and Deep Search are free on every plan. Plus costs $19 a month for 2,000 Sparks and Pro $39.90 for 5,000.

Watch out for: Spark use varies widely with task complexity, so costs are hard to predict, and several unlimited allowances are limited-time offers.

ToolChase Score: 3.9/5 · Read the full Fellou review

7. Brave Leo, best for privacy

Brave Leo is the assistant built into the Brave browser, and it is the choice for privacy. Leo needs no account or login, does not retain or share your chats and does not use them for model training. It summarises pages, analyses PDFs, Google Docs and Sheets, translates and drafts, uses Brave Search for up-to-date answers, and can even run your own local or remote models.

Leo is free to use, and Leo Premium adds more models, higher usage limits and faster responses.

Watch out for: Leo focuses on chatting with your tabs rather than completing multi-step tasks on websites, so for hands-off web work look at Comet, Opera Neon or Fellou.

ToolChase Score: 4.4/5 · Read the full Brave Leo review

8. Genspark AI Browser, best for on-device AI

Genspark, best known for its Super Agent workspace, also makes the Genspark AI Browser for macOS 15 or later, on Apple silicon or Intel, and for Windows. Its standout is On-Device Free AI: models that run locally on your computer, at no cost and without an internet connection. Super Agent works on any website to find deals, compare products and analyse reviews, Autopilot Mode browses and completes web tasks for you, and a built-in MCP Store connects more than 700 tools, including Discord, GitHub, Notion and Slack.

The browser also blocks ads. Genspark's plans and credits are covered in our full review.

Watch out for: the Mac version needs macOS 15 or later, and Autopilot Mode hands your browsing to an agent, so supervise it on logged-in accounts.

ToolChase Score: 4.2/5 · Read the full Genspark review

9. Arc Search, best AI browser on mobile

On a phone, Arc Search from The Browser Company is the most distinctive AI browser. Type a question, tap Browse for Me, and it reads several websites and builds a single answer page with sources. It also blocks ads, trackers, pop-ups and cookie banners, archives old tabs automatically, and offers reader mode, translation and voice search.

Arc Search is free on iOS and Android, with no paid plan.

Watch out for: it is a mobile app, not a desktop browser, and The Browser Company's main focus is now Dia.

ToolChase Score: 4.5/5 · Read the full Arc Search review

Prefer your current browser? Use an AI extension

If you would rather not switch at all, an extension adds an AI sidebar to the browser you already have. Merlin AI and Sider put a chat assistant next to any page in Chrome and other browsers, and Bardeen automates repetitive browser work such as lookups and data entry. All three are in our AI browsers category.

What happened to ChatGPT Atlas?

OpenAI launched ChatGPT Atlas on macOS on 21 October 2025 with ChatGPT built into every tab, then deprecated it: Atlas stopped working on 9 August 2026, as OpenAI moved browser-based agent features into ChatGPT and Codex. Atlas browser data did not transfer automatically, and OpenAI now points former users to the ChatGPT desktop app and to the ChatGPT Chrome extension or sidebar, where available. If you want a dedicated AI browser instead, Comet is the closest free replacement and Dia is the Mac alternative.

Comparison table

"Not stated" means our review of that browser does not document the feature, so we do not claim it.

How to choose an AI browser

You want one AI browser everywhere. Comet is free on Mac, Windows, iOS and Android.

You do not want to switch browsers. Stay in Chrome with Gemini in Chrome or in Edge with Copilot, or add Merlin AI or Sider as an extension.

You want an agent to do the work. Fellou and Opera Neon's Standard plan run multi-step web tasks and research, and Opera Neon's free plan lets the agents you already use drive the browser.

You work on a Mac and live in Slack, Notion and your calendar. Dia's paid plans connect its assistant to those tools.

Privacy matters most. Brave Leo needs no account and does not keep or train on your chats, and Genspark's browser can run AI models on your own device.

You mostly browse on your phone. Arc Search builds answer pages for you on iOS and Android.