Local vs cloud AI agents: why where it runs matters
Cloud agents work on a remote computer. Local agents work on yours. What that changes for logins, blocked sites, privacy and control.
October 31, 2026
There are two ways to give AI a computer to work on. You can rent it one in the cloud, or you can let it use yours. Both are called "AI agents", and they behave very differently.
Cloud agents: a computer far away
A cloud agent spins up a fresh virtual computer in a data center, opens a browser there, and does the job. You get a summary at the end, sometimes with a recording.
That’s convenient for public web research. It gets harder as soon as the task touches your life:
- Logins. The cloud computer isn’t signed in to anything. You either hand over passwords or sign in through a remote screen.
- Blocked sites. Banks, government services and many shops see a visit from a data center in another country and block it, or throw CAPTCHAs.
- Your software. A cloud computer doesn’t have your desktop apps, your licensed tools or your files.
- Seeing it late. You find out what happened when it’s done.
Local agents: your own computer
- It uses the logins you already have.
You never type a password into the agent, and never reads password fields. Password managers are blocked by default.ands - It visits from your network. To a website, it looks like you, because it’s your browser on your connection.
- It works in any app you have, including old software with no API. See Automating software without an API.
- You watch it live. An orange hand moves on the screen. You can stop or correct it at any step, not after.
The trade-off
A local agent uses your computer while it works, the way a person borrowing your desk would. For most chores that’s a few minutes. You can step away; anything sensitive waits for you.
Which one to choose
If the task is public and research-shaped ("compare these five products"), a cloud agent is fine. If it touches your accounts, your files, your installed apps, or a site that cares where you are, a local agent does it the way you would, with the same access you already have.