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The Computer is a sandboxed container the agent can actually work in. It writes the code, installs what it needs, runs a build, and serves the result at a live URL you can open. Nothing runs on your laptop and nothing is left behind on it. It is attached to a chat. Ask for something in that chat and the agent uses the machine to deliver it rather than handing you a file to run yourself.

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What it can do

Install packages, scaffold with a framework CLI, run builds and tests, read and write files, and start a preview server that stays up at its own address. bun, node, npm, git, curl, openssl and python3 are available. Previews are private by default. You choose whether a project stays private, is visible to your workspace, is public, or sits behind a password.

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Sizes

Two to choose from. Everything else is handled for you. You are never asked to pick memory. If a command runs out of room, the agent stops, tells you it needs more, names the new rate, and waits for you to say yes before continuing. Declining leaves the project exactly where it was.

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What it costs

Only the minutes it runs. Starting a project costs nothing, stopping it stops the meter, and an idle machine that has been stopped is not billed. The rate is the size you chose, charged per minute, and it comes out of your monthly credit balance rather than being invoiced separately. See Credits for the balance itself and everything else that draws from it.

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Limits by plan

A session is how long one run can last before the machine stops on its own. The Computer is not part of the free plan.

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Getting started

Open a chat, ask for something that needs to run, and the agent creates the project on its own. There is no setup step and nothing to install.
Related: Prompting for getting more out of the agent.