How to Choose an AI Browser Agent

Do you want a new browser, or an agent that uses yours?

If you’re happy to switch browsers, an AI browser puts the agent one click from every page. If not, pick an agent that works alongside the browser you already have.

AI browsers replace Chrome or Safari. The agent lives in the browser itself, so it can read the page you’re on, work across your tabs and act when you ask. Opera Neon still brings the everyday basics with it, like tab management, an ad blocker and a free VPN, so switching doesn’t mean giving those up.

Not ready to move? Retriever AI starts as a Chrome extension on the page you’re already on. ChatGPT’s browser extension can work in an existing Chrome, Edge, Brave, Opera or Vivaldi tab. If you’re torn between two AI browsers, Comet vs Opera Neon puts them side by side.

Should it work in your browser or in its own?

Use your own browser for tasks you want to watch. Hand work to a cloud browser for jobs that should finish while you’re away.

• In your browser. You see every click and can step in mid-task. The catch: the work happens on your machine, so closing the laptop stops it.
• In its own browser. The agent runs a browser on its own computer in the cloud. You give it a goal, leave, and come back to a finished result. Good for long research, repeat jobs and anything on a schedule.

Some agents do both. Retriever AI runs in Chrome on the page you’re on, or in the cloud on a schedule. Fellou runs tasks in a separate workspace in the background, so you can keep browsing while it works.

Agents you hand a task to and come back later:

Does it need more than the browser?

If the job touches desktop apps or files, not just websites, you want a computer-use agent. These see your screen and use the mouse and keyboard the way you do, so they work even in apps that have no web version.

They differ most in how you ask. Atticus works by voice: hold a key, say what you want, and your Mac does it. Mermaid lets you text your Mac from your iPhone when you’re not at your desk. Zo goes the other way and gives you a whole computer in the cloud that keeps working when yours is off.

A computer-use agent can reach everything you can, so check how to stop it. Rosply has a hotkey that kills it mid-step and caps how many actions a single run can take. That’s the kind of brake to look for.

What happens with your logins?

This is the question that matters most: an agent that can use your signed-in accounts can also act in them. Know which accounts it can reach before you give it a task.

There are two common setups:

• It uses your existing sessions. An agent working in your own browser sees the sites you’re already signed into. Retriever AI, for example, works across the open web and the sites you’re signed into. Convenient, and it means the agent acts as you.
• It keeps a separate profile. ChatGPT’s built-in browser uses a profile apart from your regular browser and doesn’t share your tabs or sessions. You sign in yourself when a task needs an account. More steps, but you choose exactly which accounts it gets.

If you’re cautious, start with a separate profile and sign in only to the one site the task needs. For a deeper look at where an agent keeps your data, see the best private AI agents.

When does it stop and ask?

A good browser agent does the reading and clicking on its own, and stops before anything you can’t undo. Paying, sending, booking, deleting and submitting a form in your name should all wait for your OK.

Look for three things:

1. A clear plan. It says what it’s about to do before it does it, so a wrong idea costs you seconds.
2. A pause before final steps. It stops at checkout or the send button and asks.
3. A way to take over. You can watch the work live and grab the controls when it gets stuck.

Treat what’s written on web pages with care too. ChatGPT’s own guide says to treat page content as untrusted and review the site and the proposed action before you share anything sensitive. That’s good advice for any agent.

Building your own agent?

If you’re a developer adding browsing to your own agent, you want browser infrastructure, not a consumer app. That means remote browsers your code can drive, plus tools to get past the parts of the web built to stop bots.

Browser Use is open source and runs in the cloud or on your own machine. It offers ready-made agents that finish a task and remote browsers for agents you build yourself, so it’s a good place to start if you’re comparing hosted browser services.

A quick way to decide

Give two agents the same real task and keep the one that finishes without you taking over. Pick something you actually do: compare a few product pages and put the results in a sheet, or fill in the same form you fill in every week.

Watch three things: did it finish, did it stop before the final step, and would you trust it with that login again? Not sure an agent is what you need at all? Start with AI agent vs chatbot.