No, but development stopped in May 2025 in favour of Dia. Arc still downloads and receives Chromium security patches, with no announced end-of-life date, but it will not get new features.

Best AI Browsers in 2026: Atlas Is Shutting Down

If you are here because someone told you ChatGPT Atlas was the AI browser to get, stop. OpenAI is shutting it down on 9 August 2026. That is about three weeks from now. Downloading it today buys you a browser that stops working before your next credit card statement.

This post used to recommend Atlas. It was wrong, and the correction is the most useful thing on this page.

What follows is an honest ranking of the AI browsers that will still exist in September: Perplexity Comet, Dia, Microsoft Edge with Copilot Mode, Brave Leo, and Opera Neon. Plus Arc, which is not dead but is not going anywhere either. Where a vendor refuses to publish a price, we say so rather than repeating a number an aggregator invented. There is more of that than you would expect.

If you came for ChatGPT Atlas: it stops working on 9 August 2026

OpenAI announced the shutdown on 9 July 2026, bundled into the same update as GPT-5.6. Atlas gets a few more weeks and then it is gone. Two outlets state the date in plain terms: Android Authority reported that “Atlas will reach the end of the road on August 9, 2026”, and TechRadar wrote that “OpenAI has confirmed that Atlas will stop working from August 9, 2026”. Worth flagging for anyone checking our work: TechCrunch covered the sunset the same day but never printed the date, so do not cite it for that.

Atlas lasted nine months. It launched in October 2025, macOS only, and never shipped a Windows, iOS, or Android build in its entire life. OpenAI’s stated reasoning, via the browser team’s James Sun, is that it would rather put AI browsing inside products people already open than talk them into switching browsers.

Where the Atlas features went

The capabilities are not being deleted. They are being redistributed into three places, all announced on 9 July:

The ChatGPT desktop app gets a much more capable built-in browser: multiple tabs, a password manager, autofill. This is the closest thing to a direct Atlas replacement, and OpenAI says the desktop work came out of what the team learned from Atlas.
ChatGPT Work mode gets a browser running in the cloud, which is where the agentic side of Atlas lands.
A ChatGPT side chat is rolling out to Chrome, bringing ChatGPT and Codex into Google’s browser as an extension rather than a rival to it.

What to do if you use Atlas right now

Export your bookmarks, history, and saved passwords before 9 August. Reporting on the shutdown is consistent that this data does not migrate to the ChatGPT app on its own. Your ChatGPT conversation history is a separate matter: that lives in your OpenAI account and is not affected by the browser going away.

Beyond that, we are at the edge of what we can verify. OpenAI said it would send deprecation details through the ChatGPT app and by email “over the coming days”, and its help article on the change is not readable from our end. There is a claim circulating that Atlas data gets permanently deleted from OpenAI’s sync servers on 23 August 2026. We could not trace it to OpenAI or to any news organisation, only to a ring of AI-generated aggregator sites. Treat it as unverified and export early anyway.

Then pick something from the list below. The honest replacement for most Atlas users is Comet.

What an AI browser actually is

The category is muddier than the marketing suggests, and the difference between the two kinds matters more than any feature list.

An assistive AI browser reads what is on your screen and talks to you about it. Summarise this page. What is this contract clause doing. Compare these two tabs I have open. It never touches anything. Dia and Brave Leo sit here.

An agentic AI browser clicks. You describe an outcome and it navigates, fills forms, logs into your accounts, and submits things on your behalf. Comet is the clearest example. Atlas was the other one, which is part of why its death leaves a real gap.

Nearly all of them are Chromium underneath, so your extensions and your muscle memory carry over. That is a deliberate choice by every vendor in the category: nobody is asking you to give up the web platform, only the chrome around it.

The line between the two types is also the line where your security risk lives. An assistant that reads a poisoned web page can be tricked into telling you something false. An agent that reads the same page can be tricked into doing something. Hold that thought; there is a section on it below.

The best AI browsers in 2026

1. Perplexity Comet: the best AI browser you can install today

Comet is the default recommendation, and the Atlas shutdown makes that clearer rather than muddier. It is the only mature agentic browser with a real user base that ships on Windows, macOS, and iOS.

The timeline is worth getting right, because it is wrong in a lot of places, including in an earlier version of this post. Comet launched on 9 July 2025 locked behind the $200-a-month Max tier. It went free to everyone worldwide on 2 October 2025, which is the date that matters and the one commonly misreported. The iOS app came later, on 18 March 2026, and that iOS date is what gets confused for the free release. If you read anywhere that Comet became free in March 2026, that source did not check.

Free means free. The browser costs nothing, and Perplexity’s paid tiers (Pro at $20/mo, Max at $200/mo) buy you better models and higher limits inside it rather than access to it.

What Comet does well is the boring, repetitive part of the web. Sorting a full inbox. Pulling the specifications out of nine open product tabs into one comparison. Filling in a booking form. The assistant sits in a sidebar with the context of every tab you have open, so you are not copying text into a chat window and back out again.

Now the parts vendors do not put in the launch video.

Agent runs are slow. A task you would finish in forty seconds by hand often takes Comet two or three minutes of visible clicking, and you end up watching it, which defeats a fair bit of the point. It also fails in a specific way: rather than stopping when a page confuses it, it improvises, and you get a confidently wrong outcome instead of an error. The Columbia Journalism Review’s Tow Center found the same pattern in Perplexity’s search product, where the paid Pro tier had a higher error rate than the free one because it answered confidently instead of declining. That disposition carries into the browser.

Perplexity is also being sued by a lot of people. The New York Times filed in December 2025; CNN filed in May 2026 over roughly 17,000 stories, photos, and videos. Dow Jones, Reddit, Britannica, Nikkei, and Asahi have all filed too. Perplexity’s chief communications officer, Jesse Dwyer, has answered the copyright claims on the record with “You can’t copyright facts.” None of this stops Comet working today. It is a reason to think about how much of your workflow you want to hang on this one company.

Get it if: you want an agent that actually does things, on any desktop OS, for nothing.

2. Dia: the nicest one to read in, if you own the right Mac

Dia is the best-designed browser in this list. It is also the most limited, and the limits are not subtle.

macOS on Apple Silicon. That is it. No Windows build has been announced, no Intel Mac, no phone. Whole categories of reader are excluded before the first paragraph of the review.

If you are inside that fence, what you get is an AI layer that behaves like a browser feature rather than a bolted-on chatbot. Highlight text and ask about it. Query across open tabs. Have it draft a reply in a tone it has learned from your own writing. It reads and it drafts. It does not go off and click things, which for a lot of people is a feature rather than a shortfall.

We cannot tell you what Dia costs. The Browser Company’s pricing page at diabrowser.com/pricing is a hard 404, and the homepage carries no prices at all. Every specific Dia figure we found in circulation traces back to an aggregator repeating another aggregator. So: no price, and the absence is the fact. If Dia matters to you, check in the app, not in a listicle.

Get it if: you are on an Apple Silicon Mac, you read for a living, and you would rather the AI hand you a draft than press buttons for you.

3. Microsoft Edge with Copilot Mode: the one already on your Windows machine

Nobody’s favourite. Frequently the right answer anyway.

Copilot Mode turns Edge into an AI browser without a download, a new profile, or a second password manager. It reads across your open tabs, summarises, compares, and handles the assistive work competently. For an office running Windows and Microsoft 365, the integration story beats anything a startup can offer, and the security team has already approved it.

The thing to know is that Microsoft will not tell you what model you are talking to. Its own public position is that “GPT-5 in Copilot has since been upgraded to newer OpenAI models”, and it has never named the successor. Anyone who tells you exactly which model powers consumer Copilot is guessing. There is a related piece of slop worth inoculating against: you will see claims that Copilot runs Anthropic’s models. Those are enterprise-only and gated behind a tenant admin. They are not in the consumer product.

Microsoft 365 pricing, US monthly: Basic $1.99, Personal $9.99, Family $12.99, Premium $19.99. Premium has a trap in it that catches families. The AI features are owner-only and cannot be shared; the extra seats get storage and apps, not Copilot.

Get it if: you are on Windows, you want AI in the browser this afternoon, and you do not want to migrate anything.

4. Brave with Leo: the privacy answer

Brave is the only browser here whose AI story starts from a position on data rather than a position on capability.

Leo is the in-browser assistant. It summarises pages, answers questions, and does not need you to log in to anything. Brave’s separate search product feeds it, and that search product is genuinely independent: since April 2023 every result comes from Brave’s own index of roughly 40 billion pages, with the old Bing API calls removed. If you see “93% independent” quoted anywhere, that number is three years stale and Brave no longer publishes a percentage at all.

Brave’s AI answers are free and are not paywalled behind Premium, which is a common misreading. Brave Search Premium at $3.00/mo buys ad-free results, nothing more. Leo has its own paid tier on top; we have seen $14.99/mo cited widely, but brave.com/leo returns a page with no prices in it, so we are not going to state that as verified. Check it at the point of purchase.

The honest drawback is one Brave itself has stated: it deliberately keeps its index smaller than Google’s to cut spam, and it has acknowledged being weaker at recovering long-tail queries. It has published no reassessment since. You will feel that on obscure searches, and Leo inherits it.

Get it if: you want the AI to read your page without the vendor reading your life.

5. Opera Neon: interesting, and unpriceable

Neon is Opera’s agentic browser, pitched around an assistant that can build small things for you and run tasks in the background while you do something else. The concept is the most ambitious in the category.

It ranks last because we cannot tell you the two things you would need to know before committing to it. opera.com/neon returns a marketing page with no prices anywhere in it and no pricing page we could find. The $19.90/mo figure you will see repeated is not on any Opera page we could reach; it traces to the same handful of AI-slop aggregators that dominate this search term. We are not printing it.

Neon is worth watching. Try it if the pitch appeals. Do not build a workflow on it until Opera says out loud what it costs.

Arc: frozen, not dead

Arc is unranked, and this is the section that explains what happened to it.

The Browser Company stopped active development of Arc in May 2025 to concentrate on Dia. Arc still downloads, still runs, and still receives Chromium security patches, and no end-of-life date has been announced. It is frozen rather than shut down. That is a real distinction, and any post telling you Arc is dead is overstating it.

What changed in October is the part people miss. Atlassian agreed to buy The Browser Company on 4 September 2025 for around $610 million, and the deal completed on 21 October 2025. Both Arc and Dia now belong to an enterprise software company whose business is selling Jira and Confluence to organisations.

Draw your own conclusion, but draw it consciously. An acquirer with that customer base has an obvious reason to pull a browser toward enterprise knowledge work and no particular reason to keep a consumer browser aimed at people who are not buying anything. Arc is already what a deprioritised product looks like: alive, patched, going nowhere. Nobody has announced that Dia will follow. It is the risk you are accepting when you pick a browser owned by a company that does not sell browsers.

ChatGPT’s replacement, unranked

The ChatGPT desktop app’s upgraded browser, the cloud browser in Work mode, and the Chrome side chat are where Atlas’s DNA now lives. They are not in this ranking because they are rolling out as we write, and ranking software we have not been able to use against products we have would be the same failure that put Atlas at number two in the first place.

If you are an Atlas refugee who wants to stay with OpenAI, the desktop app is your landing spot. Check back when it has been in the wild long enough to judge.

How they compare

Browser	Type	Platforms	Price	Best for
Perplexity Comet	Agentic	Windows, macOS, iOS	Free (Pro $20/mo, Max $200/mo optional)	Most people, most tasks
Dia	Assistive	macOS, Apple Silicon only	No published pricing	Reading and drafting on a Mac
Edge Copilot Mode	Assistive	Windows, macOS	Free; M365 Premium $19.99/mo	Windows and Microsoft 365 users
Brave + Leo	Assistive	Windows, macOS, Linux, mobile	AI answers free; Leo paid tier unverified	Privacy
Opera Neon	Agentic	Desktop	Not published anywhere we can reach	Watching, not committing
Arc	Assistive	macOS, Windows	Free	Nothing new; frozen since May 2025
ChatGPT Atlas	Agentic	macOS only	Free	Nothing. Stops working 9 Aug 2026.

The security problem nobody has solved

Prompt injection is the whole issue, and no vendor in this category has fixed it.

Here is the mechanism. An AI browser reads web pages. It cannot reliably tell the difference between a page’s content and an instruction inside that page. So an attacker writes instructions into a page, in white text, in a comment, in an image alt attribute, and your agent reads them as if you had typed them. Now the thing holding your logged-in sessions is following a stranger’s orders.

Assistive browsers get a false answer out of this. Agentic browsers get an action. That is the difference between being misinformed and being robbed, and it is why the assistive-versus-agentic distinction at the top of this post is not a taxonomy exercise.

Practical rules, given that: keep the agent logged out of your bank, do not grant standing access to accounts that move money, and read what it proposes before you approve it. If a task is high-stakes enough that being confidently wrong would hurt, do it yourself. The two minutes you save are not the trade you think they are.

The legal fight over whether your agent is allowed in

There is a second problem that has nothing to do with attackers: the website may not want your agent there, even when you do.

Amazon sued Perplexity over Comet’s shopping agent, arguing under the Computer Fraud and Abuse Act that an agent logging into your Amazon account with your permission is still unauthorised access, because Amazon never authorised it. On 9 March 2026, US District Judge Maxine Chesney granted Amazon a preliminary injunction, finding Amazon likely to succeed on its CFAA and California state law claims.

Then the Ninth Circuit paused it. About a week after the injunction issued, the appeals court granted Perplexity an administrative stay while it considers a longer pause pending appeal, as CyberScoop reported on 17 March 2026.

An injunction stayed on appeal is not settled law, and you will find posts that report the first half of that sequence and not the second. We are not going to tell you how the appeal came out, because we could not verify the current docket from a source we are permitted to read. What is safe to say is the shape of it: whether a website can use a 1984 anti-hacking statute to keep out software its own customers chose to use is an open question, and the answer will shape what every agentic browser is allowed to do for you.

What Atlas dying actually tells you

Nine months. Backed by the best-funded company in the industry, attached to the most recognised brand in consumer AI, and it still could not justify its own existence.

Read OpenAI’s reasoning literally, because it is the most interesting thing anyone in this category has said out loud: it decided it was easier to put AI browsing into products people already use than to get people to change browsers. Coming from OpenAI, that is close to an admission that the standalone AI browser may not be a product category at all. It may be a feature that Chrome, Edge, and Safari absorb, which is exactly what Edge Copilot Mode already is.

Look at the rest of the field with that lens. Arc: frozen. Atlas: dead in three weeks. The Browser Company: owned by an enterprise software vendor. Neon: won’t say what it costs. Comet is the healthy one here, and its parent is being sued by half the American press.

The practical takeaway is not to avoid these tools. It is to hold them loosely. Use the free one, keep your bookmarks exportable, and do not rebuild your working life around a browser that might be a line item in someone’s strategy review next quarter. Atlas users are learning that this month.

What did not make the cut

ChatGPT Atlas – removed from the ranking rather than deleted from the post, because people arrive here searching for it and deserve to be told it stops working on 9 August 2026. It was previously ranked second on this page. That was a mistake.
Arc – alive and patched, but development stopped in May 2025. Recommending a frozen product to a new user is not a service to them.
Chrome with Gemini – Google keeps adding AI to Chrome, and Gemini 3.5 Flash is now the default model in AI Mode. We left it out because we could not verify Google’s AI subscription pricing from any Google surface. one.google.com renders empty price fields, and gemini.google/subscriptions serves us Indian rupees in Hindi with no USD anywhere. The tier structure is real. The dollar figures in every listicle are not sourced from Google, so we will not repeat them.
“SearchGPT” – not a product. It was a July 2024 prototype that was folded into ChatGPT. Any list showing it as a separate entry is padding a number.
Sidebar extensions generally – a chat panel bolted onto Chrome is a useful thing, but it is not a browser, and mixing the two inflates these lists.

Pick by how you actually browse

You were about to install Atlas: install Comet instead. It is free, it does the same class of agentic work, and it runs on more than one operating system.
You are on Windows and want this to take five minutes: turn on Copilot Mode in the Edge you already have.
You are on an Apple Silicon Mac and mostly read: Dia, accepting that you cannot know the price until you are in it.
You care about data: Brave with Leo.
You want an agent doing the tedious parts of your inbox and your tabs: Comet, logged out of anything financial.
You are on Arc and happy: stay, but know it is frozen and have somewhere to land.

If you run a website, this matters to you too

An agent reading your site is not a person reading your site. It skips your layout, ignores your calls to action, and lifts the specifications, the price, and the availability. If your value is in how a page looks, an agent throws away the part you paid for.

Keep some perspective on the scale, though. BrightEdge’s own data from January to August 2025 found AI search driving under 1% of referral traffic, and its CEO Jim Yu was blunt about it: “AI search is the fastest-growing channel we’ve ever tracked. However, growth and quality are two different things.” StatCounter put Google at 91.27% of worldwide search in June 2026. This is a shift to prepare for, not an emergency. Clean structure and honest markup serve both audiences, which is what good SEO practice asked of you anyway. If you are auditing for this, our roundup of AI SEO tools covers what is worth paying for.

Frequently asked questions

Is ChatGPT Atlas shutting down?

Yes. OpenAI announced on 9 July 2026 that Atlas stops working on 9 August 2026. Export your bookmarks, history, and passwords before then, because reporting is consistent that they do not transfer automatically. Your ChatGPT chat history lives in your account and is unaffected.

What should I use instead of ChatGPT Atlas?

Perplexity Comet for most people. It is free, it is agentic in the same way Atlas was, and it runs on Windows and iOS as well as macOS, which Atlas never did. If you want to stay with OpenAI, the browser built into the ChatGPT desktop app is the intended landing spot, and Work mode gets a cloud browser.

When did Perplexity Comet become free?

2 October 2025, worldwide. It launched on 9 July 2025 behind the $200/mo Max tier. The 18 March 2026 date you may have seen is the iOS launch, not the free release, and the two get conflated constantly.

How much does Dia cost?

The Browser Company does not publish a price. Its pricing URL is a 404 and the homepage has no figures on it. Any specific Dia price you find is an aggregator’s invention until The Browser Company says otherwise.

Do AI browsers work on Windows?

Comet, Edge with Copilot Mode, and Brave with Leo all do. Dia does not, and no Windows build has been announced. Atlas never shipped one in its entire nine-month life, which is part of why the shutdown affects fewer people than the headlines suggest.

Are AI browsers safe to use?

Safe enough for reading, riskier for acting. Prompt injection is unsolved across the category: a web page can carry hidden instructions that your browser’s AI treats as commands from you. Keep agents out of banking and anything that moves money, and approve actions rather than delegating them wholesale.

Is Arc dead?

No, but it is finished. Development stopped in May 2025 in favour of Dia. It still downloads and still gets Chromium security patches, and no end-of-life date has been announced. It will not get new features. Do not start a new setup on it.

Who owns Dia and Arc now?

Atlassian. It agreed to acquire The Browser Company on 4 September 2025 for around $610 million and completed the deal on 21 October 2025. Both browsers belong to an enterprise software company now, which is a fact worth weighing before you make one of them your daily driver.

Can an AI browser replace Google search?

Not yet, and the numbers are not close. Google held 91.27% of worldwide search in June 2026 per StatCounter. AI browsers are better than search at synthesising across several sources, and worse at the quick factual lookup where you want a link, not an essay. Most people end up using both. Our comparison of ChatGPT and Gemini alternatives and our roundup of AI search engines for research go deeper on that split.

Are these browsers built on Chrome?

Chromium, the open-source project underneath Chrome, and yes, nearly all of them are: Comet, Dia, Arc, Brave, Edge, and Neon. Your extensions and passwords come across. The AI is the differentiator; the web engine is not.

The bottom line

Install Comet. It is free, it is the most capable agentic browser that will still exist in September, and it runs everywhere you work.

Do not install Atlas. It stops working on 9 August 2026, and if you already use it, export your data this week.

Everything else here is conditional. Edge if you are on Windows and want zero friction. Dia if you are on the right Mac and read more than you click. Brave if privacy is the thing that decides it. Neon if you enjoy trying software whose price is a mystery.

And keep the agent on a short leash. It cannot tell the difference between a web page and an instruction hidden inside one, no vendor has solved that, and the courts have not decided whether it is even allowed into your accounts. Useful, genuinely. Trusted, not yet. If you want the wider view of what these tools are good for, our guide to AI tools and our roundup of AI writing tools pick up where this leaves off.