ChatGPT Atlas is retired: what to move to

Windows 10 or later and macOS 11 or later are its supported systems; Linux is not on that list.

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Mac and Windows: its changelog has Dia 1.53.0 for Mac and 1.2.0 for Windows. Linux is not mentioned.

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Windows and macOS; its FAQ says Linux is not supported.

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Downloads for Mac, on Apple or Intel chips, and for Windows; Linux is not mentioned.

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Windows and macOS, the two systems Opera names.

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Leo is in Brave on macOS, Windows and Linux.

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macOS, Windows and Chromebook Plus.

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Downloads for Windows, Mac and Linux.

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Comet Assistant acts on websites for you, started from its panel or a / shortcut, while you keep browsing.

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Asks before sensitive steps such as sending an email or placing an order; Always allow skips the question from then on.

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Profiles each keep their own data and sign-ins, each in a window of its own.

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Follows your Perplexity plan: Free picks the model, Pro adds advanced models, Max adds OpenAI and Anthropic models. Own API keys are not mentioned.

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Fills in forms with @Autofill, and skills use your connected tools; clicking and moving between pages for you is not described.

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The skill builder shows its steps for you to approve; a stop before purchases, sends or sign-ins is not stated.

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Profiles are separate browsing contexts you can swipe between; being signed in to several at once is not stated.

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GPT-5 runs /research and skills, with backup models when one fails; choosing a model or bringing your own key is not described.

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On phones, Browse for Me searches, reads pages and writes you an answer page; the desktop app states no agent that acts on pages.

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No agent that acts on pages is described, so no question before sensitive steps is either.

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Spaces and Profiles in one window; whether several sign-ins to one site work side by side is not stated.

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ChatGPT from the Command Bar with Arc Max; no choice of model or own API key is stated.

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Plans and carries out web and desktop tasks across several apps on its own, getting through sign-ins and CAPTCHAs; you start from a task or a chat.

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You can look over and edit a workflow before it runs, watch it, and stop it at any step; a stop before sensitive steps is not named.

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No profiles or separate sign-ins are described; it works inside accounts you are signed in to, such as X and Reddit.

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Some plans include an advanced model; which models, choosing one, and own API keys are not stated.

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Neon Do acts inside your signed-in browser session, on a paid plan; outside AI clients can also click and fill in forms through MCP.

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You can pause it or take over at any moment; the FAQ answer about payments and sign-ins could not be read.

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Separate profiles, or several sign-ins to one site, are not mentioned; its agents work in your active session.

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Models from OpenAI, Anthropic and Google, the strongest for subscribers; own API keys are not stated.

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AI browsing acts on sites, from research to filling a shopping cart, once you start it; it is an experiment in the Nightly test build, on computers only.

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Asks your permission for sensitive actions that an attacker may have slipped in; not a general stop before buying.

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Containers keep cookies apart, so several accounts of one site run side by side.

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Brave-hosted Qwen, Llama and Claude models to choose from, or your own model, other makers’ APIs included.

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Auto browse fills in carts and books reservations for you, for Google AI Pro and Ultra subscribers in the U.S.; you can take over.

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Auto browse asks before some sensitive tasks, and Skills ask before calendar or email actions.

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Chrome profiles keep work and personal accounts apart, and you switch between them.

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Built on Gemini 3; no choice of model or own API key is stated.

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Browse with Copilot clicks, types and moves between tabs for you, started from Copilot’s text box; it needs Microsoft 365 Premium and comes to the U.S. first.

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Asks for your attention and supervision before certain actions, such as buying something.

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Several profiles, each opening in its own Edge window.

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Copilot’s Smart mode uses a GPT-5 model, per a Copilot page that does not name Edge; no choice of model or own API key is stated.

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Works with most Chrome Web Store extensions; some Chrome-only features may not.

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Basic AI right after install, with no sign-in; signing in raises the limits, and paid Pro and Max plans exist.

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A public installer for Windows and Mac on its download page; companies roll it out separately.

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The assistant keeps browsing history and cookies on your device, sends only the context a request needs, and Perplexity says it does not sell it.

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Supports browser extensions and syncs them; older Manifest V2 extensions no longer work.

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A free tier, Better Browser, with usage limits; the paid tiers are Better Answers and Better Days.

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A free tier and public releases for Mac and Windows; Early Birds can sign up to get new features first.

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Says your data is never sold or used to build ad profiles, and that Sync is end-to-end encrypted.

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Supports every extension Chrome supports, its FAQ says.

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The pages checked do not say whether Arc is free; the FAQ says its future business will charge companies.

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Public downloads for Windows and macOS; you need an account to use it.

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Says it does not know which sites you visit or what you type, and does not sell your data.

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Chrome Web Store extensions are not mentioned; the word extensible there refers to its developer agent framework.

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A free plan with a limited number of Sparks, its credits, and some scheduled tasks; paid Plus, Pro and Ultra plans exist.

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Public downloads for Mac and Windows, and a free plan.

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Collects your prompts, files, actions and the state of your setup, may ask for screen and accessibility permissions, and lets you object to training on your data.

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Supports themes and extensions; which store they come from is not named.

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A free plan with the browser, its command-line tool and MCP Connector, which needs an account to connect; Standard adds Neon’s own agents.

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Open to anyone since December 2025, when the waitlist was removed; a download for Windows and macOS.

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What goes to its AI providers is kept briefly, 30 days at OpenAI and 24 hours at Google, and is not used to train their models.

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Installs extensions straight from the Chrome Web Store, with support for nearly all Chromium ones.

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Leo is free, and Leo Premium adds more models and faster answers.

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A public download, with no account needed for free Leo; Leo Premium is paid.

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Says Leo does not keep or share chats, or use them to train models.

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Extensions come from the Chrome Web Store.

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Basic Gemini in Chrome is open to all its users, though free use is not stated outright; auto browse needs a paid Google AI Pro or Ultra plan.

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Gemini in Chrome is not yet open to every user, and auto browse is rolling out gradually, in the U.S. only.

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You can pause Gemini in Chrome, limit what it can see, and delete your history.

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Installs extensions from Chromium-compatible stores, the Chrome Web Store included.

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Microsoft Copilot itself is free; Browse with Copilot needs Microsoft 365 Premium.

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A free public download of Edge; Browse with Copilot is rolling out in the U.S., with more markets to follow.

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Browse with Copilot keeps screenshots of the pages it visits, to troubleshoot and review its work; how long is not on the part of the page that was read.

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