Browser & desktop workflows
Enabled in Experiments -> Agent Browser
- New Browser tab support for live agent-browser sessions, including an address bar, reload control, ready-state display, and streaming updates.
- Better Browser tab signal with clearer Recent Actions and less noise.
- Improved reliability for keyboard delivery, shell-launched browser sessions, and server-mode browser sessions.
- Added workspace-scoped virtual desktops via Portable Desktop.
Agents, SSH, and models
- Added grouped task variants and made task variants easier to discover.
agent-browseris now available as a built-in skill.- SSH workspaces can now use host-global skills and agents.
- Added support for GPT-5.4 Mini and GPT-5.4 Nano.
Quality of life
- Consistent recovery of interrupted chats on restart.
- Improved queued-message handling and chat layout stability while sending or resizing the composer.
- Polished immersive review with LoC progress, cross-file navigation, and undo.
- Reduced idle compaction / notification noise and improved startup diagnostics.