Best AI Browsers in 2026: 8 Options Compared by Use Case

An AI browser is a web browser with built-in AI features such as page summaries, a chat assistant, writing help and agentic browsing, all working without separate extensions. The difference from a regular browser with a chatbot open in another tab is context. An AI browser can read the page you are on, refer to your open tabs and, in some cases, take actions on live websites, so you do not copy and paste between windows.

The browsers in this guide fall into three groups.

AI-first browsers (Comet, Dia) build the browser around the assistant and connect it to research or work tools.

Everyday browsers with a built-in assistant (Edge, Brave, Ace, Opera) keep a conventional browsing experience and add AI to the page you are viewing.

Agentic browsers (Genspark, Fellou) put autonomous task execution first.

The right pick depends on what you need most: privacy, help with everyday browsing, work across apps, or autonomous task completion.

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This guide compares 8 browsers on what each vendor documents: AI features, agent capabilities, supported platforms, pricing and privacy policy. Every feature, plan and price below comes from the vendor's own website, help center, pricing page or blog, read on 2026-10-21. Where a feature is the vendor's own description, the text says so. Prices are US prices and change often, so check the vendor's pricing page before you subscribe.

The browsers are numbered by use case, following the three groups above. The numbers are not a ranking.

For privacy, the guide looks at where queries are processed (on your device or in the cloud), what the vendor says it retains or uses for model training, whether an account is required, and whether the vendor offers a mechanism you can verify beyond policy language.

Update, October 21, 2026: OpenAI retired ChatGPT Atlas, its Mac browser, on August 9, 2026, so it is no longer part of this comparison. OpenAI says Atlas's browser-based agentic capabilities moved into ChatGPT: the built-in browser in the ChatGPT desktop app for deeper agentic work, and the ChatGPT Chrome extension or sidebar for help while browsing in Chrome, where available.

Every browser here is free to download. What the free tier includes differs: Opera AI, Brave Leo, Edge's Copilot and Ace include AI use at no cost within limits, Comet's browser agent needs a paid Perplexity plan, Dia's AI features need a paid plan once the trial ends, and Genspark and Fellou meter agent work in credits.

The numbers follow the three groups above, from AI-first browsers to everyday browsers with an assistant to agentic browsers. They are not a ranking.

1. Perplexity Comet

Comet is Perplexity's AI browser. After a limited release that began in July 2025, Perplexity made it free for everyone on October 2, 2025, and it is now available for Mac, Windows, iOS and Android.

The Comet Assistant answers questions about the page you are on and works across your open tabs. As a browser agent, it can also go to websites and complete tasks. Perplexity's Comet page shows it comparing news coverage, drafting email replies, building a study plan and buying an item. Answers draw on Perplexity search, which cites its sources.

Strengths:

• Browser agent that navigates sites and completes multi-step tasks, according to Perplexity
• Perplexity search with citations in every answer
• Available on desktop and mobile

Limitations:

• Perplexity's plan table lists Browser Agent (Comet Assistant) queries as not included in the Free plan
• Agent queries have monthly limits on Pro and Max as well

Best for: Researchers and knowledge workers who want sourced answers and an agent that can act on websites.

Pricing: The browser is free. Perplexity Pro (from $17/month billed annually) and Max (from $167/month billed annually) include the Comet Assistant with monthly limits.

2. Dia

Dia comes from The Browser Company of New York, the maker of Arc, which Atlassian agreed to acquire in September 2025. Dia runs on macOS and Windows and is built for work.

Dia's site describes a Morning Brief that lays out your calendar, inbox and key links at the start of the day, synthesis that gathers information from tools such as Slack, Notion and Teams into a shareable report, and answers that draw on context across Google Workspace, Teams and your open tabs. Dia can also turn that context into slides. Skills turn the prompts you use often into reusable shortcuts, and Dia's natural-language Skill builder creates one from a sentence describing what you want.

Strengths:

• Skills let you build reusable AI shortcuts in plain English
• Pulls context from work tools such as Slack, Notion, Teams and Google Workspace
• Dia says your data is never sold or used to build ad profiles, and its Sync is end-to-end encrypted
• Dia for Work adds SSO and admin tools

Limitations:

• The free plan, Better Browser, has no AI features. New Mac users get a 14-day trial, then need a paid plan for AI
• Paid plans are metered in Tasks, with $20 top-ups when you run out
• Dia says existing users and Windows users keep their current access for now, so what you get depends on when and where you installed it

Best for: Knowledge workers who spend the day across Slack, Notion, Teams and Google Workspace.

Pricing: Better Browser is free, without AI. Better Answers is $10/month and Better Days is $100/month. New users get a 14-day free trial of Better Days with no credit card.

3. Microsoft Edge with Copilot

Edge is a conventional browser with Microsoft's Copilot built in. Microsoft's Copilot in Edge page lists a sidepane that summarizes the page, compares options and answers questions without leaving the page, comparison across open tabs, writing assistance, Image Creator, and Copilot connectors to other apps. Journeys groups your browsing into related pages, searches and chats that you can reopen from the new tab page, and Copilot can remember what you have worked on if you turn on memory.

Strengths:

• Tab comparison and page summaries from the sidepane
• Journeys organizes past browsing by topic
• Available on Windows, Mac, Linux, iOS and Android, with Copilot in the mobile app
• Free to use within Copilot's usage limits

Limitations:

• Microsoft says higher limits, agents and complex multi-step tasks require a Microsoft 365 subscription
• Feature availability varies by device type, market and browser version, according to Microsoft

Best for: Users who want AI features without leaving a conventional browser.

Pricing: Free within usage limits. A Microsoft 365 subscription raises the limits and adds agents.

4. Brave with Leo

Brave Leo is the AI assistant built into the Brave browser. Leo summarizes web pages, documents and PDFs, drafts content, translates and helps with code, and Brave documents a multi-tab context feature for asking about several open tabs at once. No account or signup is needed for the free version. Brave says it does not collect identifiers such as your IP address and does not use conversations for model training.

Brave's Leo page lists models from Mixtral, Anthropic's Claude and Meta's Llama. With Bring Your Own Model, you can instead connect Leo to a local model on your own machine, a remote model, or a third-party API. In October 2026 Brave added end-to-end encrypted chats for the open-weight GLM 5.3 Flash model: prompts are encrypted on your device with Oblivious HTTP and processed inside Nvidia-backed Trusted Execution Environments operated by NEAR AI, which prove their setup through hardware attestation. Brave says even it cannot read them.

Brave is also testing an agent. Its AI browsing feature, available for early testing in all release channels through a flag in brave://flags, lets Leo browse on your behalf inside a separate browser profile that isolates the agent from your regular browsing data.

Strengths:

• Bring Your Own Model keeps prompts on your machine when you use a local model
• GLM 5.3 Flash chats run in Trusted Execution Environments you can verify through hardware attestation, not only through policy
• No account required for free Leo
• Available on desktop, Android and iOS

Limitations:

• AI browsing, the agent feature, is still in early testing behind a flag
• Local model quality depends on your hardware and the model you choose
• Higher rate limits and Brave's premium model lineup require Leo Premium

Best for: Privacy-conscious users who want AI assistance with local or verifiable processing.

Pricing: Leo is free. Leo Premium is $14.99/month or $149.99/year, with a 7-day free trial.

5. Ace

Ace is a free AI browser for Windows and macOS from Arpeely, a technology company founded in 2017. It is built on Chromium, runs Chrome Web Store extensions, and imports bookmarks, passwords, history and extensions from Chrome.

Ace puts its assistant next to the page you are reading. According to Ace, you can highlight any text and ask about it, ask questions about files such as PDFs, documents and images, summarize long articles and videos, compare options across open tabs, check a page's claims against sources, draft emails and replies where you are typing, generate images, and group related tabs. Ace says the assistant acts only on the page in front of you. It does not go to other sites to buy or book on its own, so you press any button that spends money.

Strengths:

• The free plan includes the assistant on the same AI model as Premium, with daily caps of 2,000 messages and 20 generated images, according to Ace
• Ads and trackers are blocked by default, and Ace says it dismisses cookie banners too
• Works in guest mode without an account; signing in adds memory across conversations
• Ace says it does not sell your data or train AI models on your chats, and Incognito Chats are never saved

Limitations:

• The browser runs on Windows and macOS only
• No agent that completes tasks on other sites, by design
• Free use is capped daily, so heavy use of the assistant or image generation needs Premium

Best for: Everyday browsing (shopping, planning, reading and replying) with AI on the page and no agent acting on other sites.

Pricing: Free plan with daily caps. Premium is $20/month or $200/year for unlimited assistant messages, up to 1,000 generated images a month, early access to new features and priority support.

6. Opera AI

Opera AI, previously called Aria, is built into the Opera browser and works without a login or signup. Open it with the Ask AI button, or press Ctrl+O on Windows or Cmd+O on macOS. Opera says it understands your current page or tab group, summarizes key points from multiple pages, analyzes uploaded files such as reports, PDFs and spreadsheets, searches and translates YouTube videos through their transcripts, generates images, and supports voice input and output. You can also highlight text on a page to get an explanation or a translation into 50 languages. Opera says Opera AI gives access to models from OpenAI and Google.

Strengths:

• No account required. AI works as soon as you install the browser
• Free image generation and file analysis
• Answers about the current page or tab island, with links to sources
• Desktop browser for Windows, Mac and Linux

Limitations:

• Agent features that act across websites live in a separate browser, Opera Neon, which needs a $19.90/month subscription to activate them

Best for: Casual users who want AI built into browsing without managing subscriptions or accounts.

Pricing: Free, with no login.

7. Genspark

Genspark is an AI workspace whose browser builds agents into everyday browsing. Genspark lists on-device AI models that run locally without an internet connection, a built-in ad blocker, a Super Agent that finds deals, compares products and analyzes reviews on any website, and an Autopilot Mode that browses feeds, gathers information and completes web tasks on its own. Its MCP Store connects Discord, GitHub, Notion, Slack and more than 700 other tools.

On paid plans, Call for Me places real phone calls for you. Genspark says it handles the conversation, navigates automated menus and returns a transcript and summary, at 500 credits per call.

Strengths:

• Autopilot Mode handles multi-step web tasks without manual browsing
• MCP Store with more than 700 tool connections
• On-device models for local, offline use
• Call for Me covers phone-based tasks on paid plans

Limitations:

• Work is metered in credits, and the free plan has 100 credits a day up to a lifetime limit
• The Mac version requires macOS 15 or later
• Each phone call costs 500 credits

Best for: Power users who want autonomous task execution and tool integrations beyond web pages.

Pricing: Free plan with 100 credits a day, up to a lifetime limit. Plus is $24.99/month, or $19.99/month billed annually ($239.99/year), with 10,000 credits a month. Pro is $249.99/month.

8. Fellou

Fellou describes itself as "The World's First Agentic Browser." You describe a task, Fellou drafts a plan for you to review, and then it carries the plan out. Its Deep Action feature plans and executes complex tasks across web and desktop apps, and Fellou says it can run several tasks at once in a background workspace while you keep browsing. Every plan includes scheduled tasks.

For developers, Fellou publishes the open-source Eko 2.0 framework for building custom AI agents.

Strengths:

• Plan-first workflow lets you review the steps before the agent acts
• Concurrent tasks run in the background while you browse
• Open-source Eko framework for custom agent development
• Scheduled tasks on every plan

Limitations:

• The free plan is a one-time bonus of 1,000 Sparks, which Fellou estimates at about 4 tasks
• Paid plans are metered too. Plus includes 2,000 Sparks a month, about 8 tasks

Best for: Developers and automation-focused users who want browser agents they can review and extend.

Pricing: Free with a 1,000-Spark new-user bonus. Plus is $19/month ($16/month billed annually), Pro is $39.90/month and Ultra is $199.90/month.

Privacy is where these browsers differ most, and where feature lists say the least. The useful questions are where your data goes and what proves it.

Local processing. Brave Leo can connect to a model you run yourself through Bring Your Own Model, so prompts can stay on your machine. Genspark says its browser runs on-device AI models with no internet connection required. In both cases, quality depends on your hardware and the model you choose.

Verifiable cloud processing. Brave says Leo chats with the open-weight GLM 5.3 Flash model are end-to-end encrypted with Oblivious HTTP and processed inside Nvidia-backed Trusted Execution Environments, so even Brave cannot read them. The hardware attestation is a hardware-signed proof you can check, which is a stronger guarantee than a privacy policy alone.

Policy-based cloud processing. Comet, Dia, Edge, Ace, Opera and the cloud features of Genspark and Fellou process queries in the cloud and describe their data handling in their policies. Some publish specific commitments. Ace says it does not sell your data, does not train AI models on your chats and never saves Incognito Chats. Dia says your data is never sold or used to build ad profiles and that its Sync is end-to-end encrypted. Brave says free Leo does not collect identifiers such as your IP address and does not use conversations for training.

Account requirements. Brave Leo and Opera AI work without an account. Ace offers a guest mode with the same limits as its free plan, and signing in adds memory across conversations. Comet's browser agent requires a paid Perplexity plan, which means an account.

Agent guardrails. Agents that act on websites carry extra risk, because a page can contain instructions written for the agent rather than for you. Brave runs its AI browsing feature in a separate browser profile, so the agent cannot reach your regular cookies and logins. Fellou shows a plan for you to review before it acts. Ace keeps its assistant on the page you are viewing and does not complete purchases or bookings on other sites.

Skip the feature matrix and match your primary use case.

You want an agent for research and multi-step tasks. Perplexity Comet. The browser is free on Mac, Windows, iOS and Android, and the Comet Assistant agent comes with Perplexity Pro or Max.

You already pay for ChatGPT. OpenAI no longer makes a standalone browser. For browser-based agentic work it points to the built-in browser in the ChatGPT desktop app, and for help while you browse in Chrome, to the ChatGPT Chrome extension or sidebar, where available on your plan.

You work across Slack, Notion, Teams and Google Workspace. Dia. The Morning Brief, cross-tool synthesis and Skills are built for that kind of day. Budget for a paid plan, since the free tier is a browser without AI.

You want AI without changing your browser habits. Edge. The Copilot sidepane, tab comparison and Journeys sit inside a conventional browser on Windows, Mac, Linux, iOS and Android.

Privacy is non-negotiable. Brave with Leo. Bring Your Own Model keeps prompts on your machine, and Trusted Execution Environments cover cloud queries to GLM 5.3 Flash.

You want free AI help on the page without an agent acting elsewhere. Ace. The free plan includes the assistant with daily caps, ads and trackers are blocked by default, and it leaves purchases and bookings to you.

You just want AI without friction. Opera AI. No signup, no subscription, and it works on install.

You need autonomous task execution. Fellou for planned, developer-oriented automation with the Eko framework. Genspark for broader autonomous workflows, including an MCP Store and phone calls on paid plans.