The new architecture utilizes isolated sandboxes for each session that are destroyed after the session ends. To access local files, the desktop application now manages specific tool calls for folders that the user has explicitly authorized. This response follows criticism from users who argue that cloud compute is insufficient for multimedia workloads, as Anthropic recently removed the local execution option for its highest subscription tiers.
Tuesday, October 20, 2026
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Anthropic Defends Cowork Cloud Shift for Battery and Mobile Access
AI15 days ago
An employee on the Cowork team said that transitioning virtual machine processing to company servers was essential to reduce resource strain on local hardware. Felix Rieseberg, who works on the tool, stated that this shift ends the disk, battery, and performance costs of running a VM locally and enables the product to be used on smartphones. He noted that while Pro and Max subscribers received email and in-app notifications about the change, the transition was more surprising to the user base than he would have liked.
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