Claude Cowork AI Agent Expands to Mobile and Web

TL;DR

Anthropic is rolling out Claude Cowork, its background AI agent feature, to mobile and web after it was previously limited to the desktop app. The practical upshot: tasks can keep running after you close your laptop, and the agent will ping your phone when it needs input.

What happened

Anthropic has expanded Claude Cowork beyond the desktop app where it launched. The feature is now available on mobile and web as well. The core mechanic that makes Cowork distinct from regular Claude chat is persistence — the agent continues working on a task in the background rather than waiting synchronously for your next message.

The new cross-platform behavior adds something genuinely useful on top of that: if the agent hits a decision point while your laptop is shut, it can notify you on your phone instead of just stalling. Anthropic says this expansion further blurs the line between Cowork and standard Claude Chat, though the sources don’t specify exactly what that means mechanically yet.

Why it matters

Background persistence and cross-device handoff are two things that separate a real agentic workflow from a glorified chat session. Until now, Cowork’s desktop-only constraint was a pretty significant limitation — if the agent runs on your laptop and your laptop goes to sleep, so does your task. Mobile notifications as a decision interrupt is a small but concrete step toward the kind of asynchronous, “set it and check in later” workflow that actually changes how you use an AI agent day-to-day.

That said, the source material here is thin. We don’t know what task types Cowork supports, what triggers a “needs a decision” notification, or how it compares to similar agent orchestration tools like OpenAI’s Operator or Google’s Gemini with background task features. The framing of Cowork and Chat converging is worth watching — it suggests Anthropic may be pushing all Claude users toward agentic patterns rather than keeping it a power-user feature. Whether that’s a good thing depends heavily on how well the agent knows when to interrupt you versus just handling something itself.

What to watch

• Watch for Anthropic clarifying what task categories Cowork actually supports and how the notification/interrupt model works in practice — that’s where the real utility lives or dies.
• If the Chat/Cowork distinction disappears entirely in a future update, that would signal Anthropic is betting that most users want persistent agents as their default interaction mode.

Sources

• The Decoder