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Anthropic's new Cowork version runs model inference and the virtual machine in the cloud instead of on the user's device, giving each session its own sandbox so work continues after the laptop closes.

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Anthropic Moves Cowork to the Cloud: Model Inference and VM Now Run Off-Device

What changed in Cowork?

FAQ

What changed between the old and new Cowork?

The old version ran model inference in the cloud but executed tool calls in a local VM shipped to the user's computer. The new version moves both inference and the VM to the cloud, with an isolated sandbox per session.

How does the agent reach my files if it runs in the cloud?

According to the published explanation, when the VM needs something on the user's device such as a file, the desktop app is responsible for that file-access tool call.

Does this help MENA enterprise teams?

It may suit teams on laptops or working across time zones, since tasks keep running after the laptop closes and can be followed from a phone with less battery and disk cost. Teams with strict data-residency requirements should review hosting and compliance policies before adopting.

Does this mean session data is shared between users?

Per the source, each session gets its own sandbox and does not share state with other sessions.

Source: Simon Willison (LLM & tools)

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