Claude Sonnet 4.5 launch, file creation/editing for Pro and mobile, and Claude in Chrome updates

Claude Sonnet 4.5 launch: Released the best model for real-world agents, coding, and computer use.

File creation and editing: Pro users can now create and edit files; all paid plan users can access this on Claude for iOS or Android.

Claude in Chrome updates: Powered by Sonnet 4.5 with improved reasoning and reliability; work across multiple browser tabs simultaneously; smarter navigation of Slack, Google Calendar, Gmail, Google Docs, and GitHub; notifications when Claude needs permission or task is complete; upload images or take screenshots for precise visual context.