Cowork and chat become one Claude
No more picking a mode: Cowork now lives inside ordinary Claude chats. Its get-it-done powers roll into chats on web, desktop and phone for Pro and Max plans. Chats, projects, connectors, and skills carry over.
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Claude
Anthropic’s everyday Claude app — chat, plus Cowork when you want it to finish the job. Full changelog →
Recent updates we covered
Cowork on web and mobile
Close the laptop and your Cowork session keeps cooking. Sessions can run in the cloud and show up on phone as well as desktop.
Source: Claude Help Center: use Cowork on web, desktop and mobile
Everything we covered, by ship date
Dailies and Snack Pack items about this tool, each linked to its official source.
Self-hosted Claude Managed Agents, your server
Your agents’ session history can now live on your own server. Claude Platform’s Nov 12, 2026 release notes launch self-hosted Claude Managed Agents, where you run the whole service and not only the sandboxes. Access goes through the Anthropic account team and isn’t self-serve.
Claude IP allowlists lock keys to your net
A leaked Claude API key now has fewer places it can run. Claude Platform’s Nov 5, 2026 release notes add organization IP allowlists in beta, so covered requests from addresses outside your list are refused. You can add up to 1,000 IPv4 or IPv6 addresses or CIDR ranges.
Claude API message threads send only new turns
Long agent loops can stop re-uploading the whole conversation every turn. Message threads, in beta on the Claude Messages API since Nov 2, 2026, keep the conversation on the server so each later request carries only the new messages, with a lower time to first token.
Standalone Claude Design closes Dec 14
Action needed: move your design systems out of standalone Claude Design before Dec 14, 2026. That’s when claude.ai/design closes and starts sending you to Claude, where Claude Design now lives and new designs are created as artifacts. Save any chats and comments you need first, because they don’t carry over.
Source: Claude Help Center: migrate from standalone Claude Design
Claude API 2026-10-21: what now returns a 400 error
Claude SDK users, check before you upgrade: the new major SDK and ant CLI versions released on Oct 21, 2026 send API version 2026-10-21 by default.
In that version, temperature, top_p or top_k in a request returns a 400 error, and so do document blocks placed directly in assistant messages. The new versions also move from the MIT License to Apache 2.0.