Guide
What is an AI browser agent?
An AI browser agent is software that uses an AI model to operate a web browser for you: it reads pages, clicks, types and fills in forms to finish a task you describe in plain words. Unlike a chatbot, which only answers, a browser agent acts, so the useful ones also let you approve anything that sends, pays or deletes.
How an AI browser agent works
Every browser agent runs the same loop:
- You describe a goal in plain words, such as "find 30 companies in Miami hiring a head of sales".
- The AI model looks at the page, as text, as a map of the page's buttons and fields, as a screenshot, or a mix.
- It picks the next action, such as searching, opening a result, clicking a button or typing in a field.
- The browser does it, and the agent looks again to see what changed.
- It repeats until the goal is met, then reports back, ideally with links to where each fact came from.
The AI model is the brain, and the browser is the hands. Good agents add a third part: a check between the two that stops risky actions until a person approves them.
The main kinds of AI browser agent
| Kind | How it works | Good at | Trade-off |
|---|---|---|---|
| Extension in your browser | An add-on that lets an AI act in the browser you already use | Quick help on the page in front of you | Shares your personal browser and everything signed in there |
| Agent in a cloud browser | The AI drives a browser on the vendor's servers | Runs when your computer is off; nothing to install | Not signed in to your sites; you log in inside their session, or it cannot reach them |
| AI-first browser | A whole browser with an assistant built in | Everyday browsing with AI help everywhere | Usually designed around personal tasks |
| Desktop agent browser for work | A separate browser on your computer, built for an agent to do business tasks | Repeated work in your signed-in business sites, with rules and logs | Runs only while your computer is on; a paid work tool |
Vassal Agent is the last kind: a desktop browser, separate from your personal one, where you sign in to your work sites and an agent does the jobs, asking before anything leaves.
What AI browser agents are good for
- Research that spans many pages: comparing vendors, building a list of companies, summarizing what competitors changed.
- Lists and lead generation: finding people or companies that fit criteria and putting them in a table with links.
- Forms and data entry: applications, CRM records, listings, portals without an import.
- Monitoring: watching pages, boards or inboxes and reporting changes.
- First drafts: writing messages based on what the agent just read, for a person to approve.
What they are not good for (yet)
- Huge volumes. An agent reads pages like a person, so a database or an API is better for a million rows.
- Tasks with no clear finish. "Grow my business" is not a task; "find 30 companies hiring a head of sales" is.
- Irreversible actions without review. Sending, paying and deleting should always wait for a person.
- Getting around a site's rules. A well-behaved agent works at a human pace, inside your account, within the site's terms.
How to choose one
- Where does it run? In your browser, a separate browser on your computer, or the vendor's cloud? This decides whether it can use your logins and whether your computer must be on.
- What stops it? Look for a hard approval step before sends, payments and deletes, rules you can read, and a log of what it did.
- Which AI runs it? Some are tied to one model vendor; others let you bring your own plan.
- Can it repeat a job? Saved workflows and schedules are what turn a demo into hours saved every week.
- Where does your data go? Read what the vendor receives: page content, logins, conversations.
The next question most people ask is whether this is safe. We answer it in Is it safe to let an AI use my browser?
Questions
What is the difference between an AI browser agent and a chatbot?
A chatbot answers in text. A browser agent takes actions in a browser, such as opening pages, clicking, typing and submitting forms, to complete a task.
What is the difference between a browser agent and a scraper?
A scraper is a script written for specific pages and breaks when they change. A browser agent reads each page like a person and decides what to do, so it copes with new layouts and with sites nobody wrote a script for. It is slower and less predictable than a script.
Are AI browser agents reliable?
For clear, repeatable tasks on ordinary websites, the good ones are reliable enough for daily use. They still make mistakes, so you should check results, and they should always stop for your approval before anything irreversible.
Do AI browser agents work on sites that need a login?
Agents that run in your own browser can use the sites you are already signed in to. Agents that run in a cloud browser usually need you to sign in inside their session, or cannot reach those sites at all.
What are examples of AI browser agents?
As of September 2026, examples include Claude in Chrome from Anthropic, the agent in ChatGPT from OpenAI, Perplexity's Comet browser, and Vassal Agent, a desktop browser for B2B work.
See it on your own work.
Try it free for 7 days with no card. After that it is $499 a month or $4,990 a year, with a private setup call and one custom workflow built with you.