Is ChatGPT Atlas Worth Using? Full Review vs Perplexity Comet and Dia Browser

I have been playing with ChatGPT Atlas for about few hours now, enough to get a feel for what it wants to be. The short version is simple. Atlas feels clean and focused, closer to Dia’s minimal take on an AI browser, and quite different from Perplexity’s Comet, which puts a lot of controls in your face. If you prefer fewer buttons and a calmer canvas, you will feel at home immediately.

The interface keeps things restrained. Where Comet stacks in voice dictation, voice mode, page summary, and an assistant button, Atlas mostly shows two things: a chat history sidebar, which is basically the ChatGPT sidebar which you find in ChatGPT.com, and an Ask ChatGPT button. That restraint is nice for everyday browsing, though it also reveals what is not here yet.

The Ask ChatGPT sidebar feels basic in its current form. It did not surface suggestions that matched the page I was on. For example, I was on IMDb looking at Inception, but the sidebar suggestions stayed generic. It also did not autocomplete while I typed, which breaks the expected flow when you are moving quickly between pages and prompts.

Cross-tab context is another missing piece. There is no option to attach or reference other tabs inside a single chat thread. Both Dia and Comet let you pull information from multiple tabs, which makes research and comparisons much faster. Once you get used to that, it is hard to go back.

Dia’s skills and Comet’s shortcuts are also a real advantage. They turn repeatable actions into one-click or one-phrase workflows. Dia has even spun this into a public gallery, so people can publish skills and you can add them like lightweight extensions. Atlas does not have an equivalent yet, which keeps it simpler, but also less powerful for people who love automations.

Search is where Atlas brings something fresh. Typing in the address bar triggers a ChatGPT search by default, with the option to use Google if you prefer. Before you even hit enter, you start seeing relevant links in the address bar that you can side scroll through. Hit enter and you land on a results view with five tabs: Home, Search, Images, Videos, and News. Home acts like the regular ChatGPT chat with some enhancements at the top, including relevant links, images, and a chat overview. I still prefer Google’s Knowledge Panel for quick facts, but this is a friendly hybrid for people who like to ask and click in one place. The Search tab shows ten links, which probably covers most real use since many users rarely go past the first Google page. Images is straightforward. Videos shows a quick strip of five YouTube results. News lists ten links. It all feels lightweight and fast to skim.

There is a neat text refinement trick baked into selection. Highlight what you have written on any site, then tap the little button that appears to chat with ChatGPT and rewrite it. For quick edits, tone tweaks, or shortening a sentence, this is useful and immediate.

Another touch I liked was “Other sites open in Mini Window.” It gave me Little Arc vibes. I do wish there was a simple keyboard shortcut to flip a tab into a mini window. Having to click “Other sites open in Mini Window” on every tab feels a bit heavy for something that should be snappy.

On agentic browsing, Comet still feels a step ahead for me. It can be slow, but it completes multi-step tasks without much hand-holding. Atlas tried to run an agentic flow and got stuck in a loop, so I had to take over and push it along. This is early-days energy, not a deal-breaker, but it is worth calling out.

If I compare them head to head, Dia and Comet are currently ahead on features that matter to power users. Where Atlas pulls ahead is convenience for people who already live in ChatGPT. If you are paying for ChatGPT and you want your browser and your assistant in one place, Atlas makes that relationship tighter. It already understands the active tab’s context, and once it understands multiple tabs inside a single chat, copy-pasting links and snippets will basically disappear. Your ChatGPT memory also becomes more useful, because the model sees what you are doing and can personalize suggestions without extra scaffolding.

My wishlist is straightforward. Give the sidebar context-aware suggestions that adapt to the current page. Add autocomplete in the Ask box. Let me attach multiple tabs to a single conversation and reference them by title. Expose a lightweight gallery for reusable actions, whether you call them skills or shortcuts. Add a quick shortcut for Mini Window. Keep pushing on agent reliability so longer tasks finish without babysitting.

Atlas is a clean, calming browser with smart search and a few thoughtful touches. For raw power, Dia and Comet have the edge today. For people who want ChatGPT at the center of their browsing life, Atlas already feels convenient and it could become the most personal of the three once multi-tab context and better suggestions arrive. If OpenAI focuses on reliability and workflow speed, Atlas will slide from promising to essential very quickly.