Anthropic

Claude Cowork launched on web and mobile, and a reflection feature now helps users track their usage patterns.

Claude Cowork extends to web and mobile. Start a task at your desk, check on it from your phone, and pick up the finished output anywhere. Sessions run remotely, saving files across devices, and work continues when you close your laptop. Scheduled tasks run with no device online. Beta rolling out over weeks starting with the Max plan.

Claude Sonnet 5 is the new flagship of the Sonnet line. It ships with a 1M token context window, 128k max output, and adaptive thinking on by default, at introductory pricing of $2/$10 per MTok through August 31. Manual extended thinking and non-default sampling parameters now return 400 errors, and a new tokenizer produces roughly 30% more tokens per request. It's the default in Claude Code; Opus 4.8 stays the top-end flagship.

Fable 5 and Mythos 5 are back. Both Mythos-class models were suspended June 12 under a US export-control directive, then restored globally July 1. The redeployment came with a proposed industry-wide framework for scoring jailbreak severity, developed with Amazon, Microsoft, Google, and others.

Claude Science brings a reproducible research workbench. The public-beta app runs analyses and searches databases, and every artifact carries the exact code, environment, and conversation that produced it. It connects to 60+ scientific databases and runs on a laptop, cluster, or on-demand GPUs, and is available on Pro, Max, Team, and Enterprise.

Claude Tag puts Claude in Slack as a teammate. Team and Enterprise users can tag Claude into conversations and delegate work; it acts under its own scoped, admin-governed, auditable identity rather than borrowing the caller's.

Claude Code gained auto mode, dynamic workflows, and background agent notifications. Auto mode no longer requires a feature flag on Bedrock, Vertex AI, and Foundry. A new dynamic workflow size setting in /config controls agent counts. Stacked slash-skill invocations now work. Background agents fire notifications when needing input or finishing. Claude in Chrome reached general availability.

Platform and API changes. API keys now support expiration dates. The Microsoft 365 connector gained write tools. Enterprise plans got model entitlements in beta. Access Transparency docs expanded with cmek_preserve events. A new memory store listing beta header standardizes pagination. MCP tunnels management API migrated to the Claude API. All SDKs support the code execution tool with REPL state persistence.

A new reflection feature helps you understand your Claude usage. The monthly recap at Settings > Reflect shows topics, active times, and observations. Settings > Time and focus lets you set break reminders and quiet hours. In beta on Free, Pro, and Max on web and desktop.