Claude Cowork Goes Mobile — Background AI Agent Now Works Anywhere
Claude Cowork launched quietly as a desktop app back in January, aimed at handing off exactly the kind of work that doesn't fit neatly into a chat window — long-running email triage, calendar management, file organization, report building. This month Anthropic took the constraint that made it a desktop tool and removed it: Cowork is now available on mobile and web in beta for Max plan users, with wider access planned, and the sessions it runs are no longer tied to a machine being open and awake.
Cloud-based background processing, for real
The headline feature is cloud-based background processing. Previously, a Cowork session lived on your desktop — close the laptop, and whatever it was doing paused with it. Now those same sessions run in the cloud, which means scheduled tasks, data aggregation jobs, and report builds keep running even when every device you own is powered off. When the agent hits a point where it genuinely needs a decision — approve this send, pick between these two drafts, confirm this calendar move — it sends a notification to your phone and waits. You respond from wherever you are, and it resumes. You can also open the same session's files and history from any device, not just the one it started on.
A cleaner interface
Anthropic also merged the interface: Chat and Cowork now share one home tab on web and desktop, one sidebar, one search bar, and one shared space for Projects and Artifacts, instead of two separate surfaces competing for attention. And through August 5, Anthropic is running doubled usage limits for Cowork specifically, which reads as a straightforward push to get people trying the mobile version while it's still in beta.
Why this is a meaningful shift
The interesting part isn't the mobile app itself — plenty of AI tools have a phone client. It's the shift in what "using an agent" means day to day. The desktop-tethered model of agentic work assumed you'd sit with the task, or at least stay near the machine running it. Cloud-based Cowork assumes the opposite: that the useful unit of interaction is a notification asking for a decision, not a session you have to babysit. That's a meaningfully different relationship between a person and an AI agent — closer to delegating to a competent assistant who occasionally taps you on the shoulder than to running software you have to keep open.
It also puts Cowork in more direct competition with the growing field of "autopilot" style agents built specifically around working while you're away, rather than agents built around a chat interface you actively drive. Anthropic entering that lane with its existing Claude user base behind it is a meaningfully different competitive position than a standalone agent startup trying to build trust from zero.
Who should try it
If your work involves recurring busywork that has a clear stopping point for human judgment — inbox triage, scheduling coordination, pulling together a weekly report from scattered sources — Cowork on mobile is worth testing during the doubled-limits window before August 5. The value isn't that it does something no other agent can do; it's that it's now genuinely asynchronous, which is the piece that was missing before.