Alternatives
Best ChatGPT Atlas Alternatives in 2026
ChatGPT Atlas no longer works. OpenAI deprecated its macOS browser and wrote that “Atlas is scheduled to stop working on August 9, 2026”, moving browser-based agentic capabilities into ChatGPT and Codex instead. There is nothing to download and no plan to compare, so this page does the only useful job left: it tells you where to go instead. The five browsers below are the ones we have reviewed, and they split by what you actually lost when Atlas closed.
Why look for ChatGPT Atlas alternatives?
The reason is not preference. Atlas is gone, and OpenAI warns that a discontinued browser may degrade or stop receiving security updates. Start by naming the three things Atlas did, because no single replacement covers all three the same way.
- → An assistant that could read the page you were on. The Ask ChatGPT sidebar was the everyday feature, and it is the one every tool here replaces
- → Browser memories. Optional recall of context from sites you had visited, viewable and deletable in settings. This is the hardest part to replace directly
- → Agent mode. A preview feature on paid ChatGPT plans that opened tabs and clicked through tasks. Two tools here are built around that job rather than treating it as an extra
Then check these four things before you commit, because they are where the five options differ most.
- → Platforms. Atlas only ever shipped on macOS, and the Windows, iOS and Android versions OpenAI announced did not appear. If that was your complaint, three of the five here are desktop-only too
- → Whether the AI is free. Atlas was a free download for ChatGPT users. Some replacements keep that, and Dia charges $20 a month before its assistant does anything at all
- → How agent work is metered. Tasks and Sparks are both in use here, and both vendors warn that consumption varies with how complex the job is
- → Agent safety. Browser agents read web pages, and pages can carry instructions aimed at AI tools. Supervise multi-step tasks and keep agents out of sensitive accounts
Comet
Best for a free assistant browser on every device you own
Dia
Best for Mac work that spans tabs and connected tools
Fellou
Best for handing whole multi-step web jobs to an agent
Opera Neon
Best for giving the AI you already pay for a real browser
Gemini in Chrome
Best for staying in Chrome and adding the assistant to it
How they compare to ChatGPT Atlas
Atlas has no score to compare against, so read these on their own terms: what each does with the page you are on, what it costs, and where it runs. Skim the highlights or click through for the full review.
Comet · 4.5/5
Best for a free assistant browser on every device you own.
Comet is Perplexity's browser with an assistant built in, and it maps onto Atlas more directly than anything else here. You ask the Comet Assistant about whatever you have open rather than pasting a page into a chatbot, search answers come from Perplexity with sources, and the assistant can also act: Perplexity's own examples include comparing how outlets cover a story, drafting an email reply that shares your schedule and turning a syllabus into a study plan. Perplexity released Comet to everyone for free on 2 October 2025, and its site lists it as available for Mac, Windows, iOS and Android. Its FAQ is direct about cost: “We will always provide a free version of Perplexity for all users, and that will include Comet.” Perplexity's optional add-on is Comet Plus, a $5 a month standalone subscription, flat, that unlocks premium content from participating publishers. Perplexity says Pro and Max subscribers get Comet Plus included in their memberships. If you simply want the Atlas experience back, and back on your phone as well as your Mac, this is the one to install. Two cautions from its ToolChase review: the value is highest if you already use Perplexity for search, and any agent reading web pages can be steered by malicious page content.
Dia · 4.2/5
Best for Mac work that spans tabs and connected tools.
Dia comes from The Browser Company of New York, the team behind Arc, and it is the entry that goes furthest past the open page. Ask Dia answers questions about any page and can pull context from the tools you connect, which Dia describes as Slack, Notion, your calendar and Google Workspace. The closest thing here to Atlas browser memories is that connected-tool context, not a recall of sites you visited. As a browser it is tidy in its own right: profiles, tab groups, split view, a built-in ad and tracking blocker and end-to-end encrypted sync. Pricing is where it parts company with Atlas hardest. Dia's live pricing page lists Better Browser at Free with no AI features at all, Better Answers at $20 a month, flat, and Better Days at $100 a month, flat, adding six times the usage plus a daily Morning Brief, reports, decks and recaps. New users get a 14-day free trial of Better Days with no credit card, and when it ends Dia keeps working as a free browser while the AI pauses. Usage is metered in Tasks, which its review flags as hard to predict. The other constraint is platform: Dia's download page lists macOS 14 or later on Macs with an M1 chip or newer, so if you left Atlas because it was Mac-only, Dia does not fix that.
Fellou · 3.9/5
Best for handing whole multi-step web jobs to an agent.
If agent mode was the part of Atlas you actually used, Fellou is the closest thing to a successor, because the agent is the product rather than a preview feature. Fellou takes a goal, plans the steps and works through them while you watch: Deep Action for complex web and desktop tasks, Deep Search for research, Browser Use for jobs from data scraping to form filling, and Computer Use to reach files on your machine. Scheduled tasks rerun recurring jobs on their own. The cost model is the thing to study. Work is metered in Sparks, and Fellou's pricing page estimates about four tasks per 1,000 Sparks while stating plainly that actual consumption varies significantly with workflow complexity. Plans read Free at $0 with a 1,000 Spark new-user bonus, Plus at $19 a month or $192 a year, Pro at $39.90 a month or $384 a year, and Ultra at $199.90 a month or $1,920 a year, all flat rather than per seat, with unlimited Sparks on Ultra marked as a limited-time offer. Builds cover Windows and macOS, including Intel Macs, which is broader desktop coverage than Atlas ever had. The trade is supervision: an agent that fills forms and touches local files needs watching, and Fellou says so plainly.
Opera Neon · 4.0/5
Best for giving the AI you already pay for a real browser.
Opera Neon answers the question Atlas users are left with in an unusual way: instead of selling you its own assistant, it will host yours. The free download includes the Neon browser with Opera's built-in ad blocker and free VPN, access to AI chat, and, the interesting part, a Browser CLI and an MCP connector that let you plug in the agents you already use, including a Claude or ChatGPT session. If you followed OpenAI to the ChatGPT desktop app and still want a proper browser under it, that is a real answer. Neon's own agents sit behind one paid tier: the Standard plan at $19.90 a month, flat, on a month-to-month subscription you can cancel any time, with Opera stating that the price includes applicable taxes. Standard unlocks advanced Neon Chat, Deep Research and the 1-Minute research agent, Neon Do for agentic actions on websites, Neon Make for creation workflows, Tasks and Cards, and full model choice. Opera calls Neon experimental, and its own compare table is honest about how thin the free tier is beyond chat. Requirements are Windows 11 on x64 or ARM, and macOS 14 or newer.
Gemini in Chrome · 4.2/5
Best for staying in Chrome and adding the assistant to it.
This is the option that avoids a migration altogether, which matters when the last one cost you your bookmarks. Gemini in Chrome is Google's assistant inside the browser most people already run: you open it from the Gemini icon or a keyboard shortcut, and it uses the context of your open tabs for takeaways, comparisons and questions about the page. It also reaches across Google apps, so it can find a flight time in your inbox and draft the update without switching tabs. Google's requirements for it list no subscription: you need to be 13 or older, or the applicable age in your country, in a supported region and language, signed in to Chrome on a Chromebook Plus, Mac or Windows computer, and it does not run in Incognito mode. Work and school accounts need an administrator to enable it. The agentic piece is the exception: auto browse, which completes tasks such as booking appointments for you, requires you to be 18 or over and in the US and to have Google AI Ultra or Google AI Pro on a personal account, and Google is releasing it gradually. So the everyday assistant costs nothing extra, the Atlas-style agent costs a Google AI subscription, and nothing here is a browser you have to move into.
Which one to pick
- → Comet is the default answer. It scores 4.5/5, the highest on this page, it is free, and Perplexity lists it for Mac, Windows, iOS and Android, so unlike Dia, Fellou and Opera Neon it comes with you onto a phone
- → Fellou if agent mode was the point. It is built around multi-step task execution first and page chat second, and its scheduled tasks rerun recurring jobs on their own
- → Dia if you are on Apple silicon, your work lives in Slack, Notion, Calendar and Google Workspace, and $20 a month for the assistant is an easy yes
- → Opera Neon if you already pay for ChatGPT or Claude and would rather connect that agent to a browser than buy a second assistant. The browser and the connectors are free
- → Gemini in Chrome if you do not want to move browsers again. It puts a sidebar that reads your tabs back in the browser you already use, with nothing to install and no import at all
- → Or stay with OpenAI. If what you wanted was ChatGPT specifically, OpenAI points Atlas users to the ChatGPT desktop app for browser-based agentic work and to the ChatGPT Chrome extension or sidebar, where available. Browse every AI browser we have reviewed →
Other ChatGPT Atlas alternatives worth knowing
Well-known options that don't yet have a full ToolChase review, so we give no score and no pricing here.
Microsoft Edge ↗
Microsoft has folded Copilot into Edge itself, including reasoning across your open tabs. In May 2026 it retired the separate Copilot Mode label introduced in July 2025 and moved those capabilities into the browser on desktop and mobile.
SigmaOS ↗
SigmaOS is a productivity-focused Mac browser built around workspaces, vertical tabs and split screen, with an assistant called Airis that answers and summarizes using the context of the page you are on.
Deta Surf ↗
Deta Surf is an open-source, local-first cross between a browser, a file manager and an AI notebook: it keeps your files and the pages you save in one library and generates notes from them, with your choice of model.