This release primarily contains polish and performance improvements.

Screenshots

Revised tabs and diffs:

Features

• Added branch selector to Workspace title bar
• Major performance improvements for long chat histories
• Revised thinking level to persist by model
• Revised Model Switcher to support use case where you have a small number of "go-to" models that you frequently switch between

Features

• Post-compaction context preservation for better continuity.
• Cumulative cost tracking for the entire chat
• Shows line additions/deletions in the git status indicator, with a toggle to enable/disable.
• OpenAI service tier improvements
  • Defaults the OpenAI service_tier to Auto
  • Adds a service tier dropdown in the UI

Fixes

• Model display with mux-gateway: Keeps model display formatting clean and consistent when using mux-gateway.
• New chat focus shortcut: Adds Ctrl+I to focus the input on the new chat page.
• Gateway toggles + model caching defaults: Fixes gateway toggle behavior and adjusts model LRU defaults.
• Editor deep link fallback: Falls back to editor deep links when the CLI isn’t available.

Hot-release for GPT 5.2 models.

Screenshots

New workspace creation UI:

Features

• Redesigned workspace creation UI
• We now use workspace name instead of ID for plan file storage

Fixes

• Variety of bug-fixes, notably including restoration of "?" tooltips

A fix-up and polish release with no new features to speak of

81bd27c 🤖 fix: allow non-git directories and clarify trunk branch requirement (#1068)
e2170ba 🤖 feat: add filter_exclude to bash_output tool (#1081)
f3a5890 🤖 fix: provider settings subscription race condition (#1066)
48ca952 🤖 fix: strip trailing slashes from project paths (#1065)
f6fda01 🤖 feat: add editor deep links for browser mode (#1078)
087ebb9 🤖 feat: collapse consecutive bash_output calls in UI (#1045)
385830d 🤖 perf: context-efficient plan mode (#1072)
92fd55f 🤖 fix: auto-reconnect WebSocket on server restart (#1071)
89e52e0 🤖 fix: resolve editor commands using shell PATH (#1073)
65826bc 🤖 feat: change + to "+ New Project" button (#1075)
cae2563 🤖 feat: improve directory picker with keyboard navigation and path input (#1039)
aaf26a8 🤖 fix: prevent background process name collisions (#1070)
34895ca 🤖 feat: add visual feedback when terminating background processes (#1062)

hotfix for 8e820b2

Features 🪄

• Workspaces now have human readable titles such as "Fix racy tests" in addition to their stable names (e.g. tests-2mzx)
• Review UI completely reworked so that reviews are staged and rendered nicely
  
• Reviews can now be added inline to edits as they stream in
• Added support for MCP Servers docs
  
• Added support for background bashes (enabling use cases such as agent spawning dev server then interacting with it)
• Reworked the Plan system to be file-based enabling a more complete phase with compaction persistence
• Added "Open in Editor" button to Workspace (by Terminal button) and to Plans

Fixes 🛠️

• Many rendering performance improvements across the app, initial load should be much faster
• Offloading syntax highlighting to worker thread for general responsiveness while dealing with large diffs
• Fixed bug where web_fetch timeout was essentially unlimited (50ff249)

Features 🪄

• Workspaces now have human readable titles such as "Fix racy tests" in addition to their stable names (e.g. tests-2mzx)
• Review UI completely reworked so that reviews are staged and rendered nicely
  
• Reviews can now be added inline to edits as they stream in
• Added support for MCP Servers docs
  
• Added support for background bashes (enabling use cases such as agent spawning dev server then interacting with it)
• Reworked the Plan system to be file-based enabling a more complete phase with compaction persistence
• Added "Open in Editor" button to Workspace (by Terminal button) and to Plans

Fixes 🛠️

• Many rendering performance improvements across the app, initial load should be much faster
• Offloading syntax highlighting to worker thread for general responsiveness while dealing with large diffs
• Fixed bug where web_fetch timeout was essentially unlimited (50ff249)

Features 🪄

UI refresh: dark mode much darker and sidebar aesthetics improved

• Added first class support for GPT-5.1-Codex-Max (alias codex-max)
  • XHIGH thinking available in slider for this model
• Mux Codes / Mux Gateway flow improved to avoid duplicate models (docs)
• Added MUX_* env variables to all bash spawns (helpful for changing behavior of scripts / programs when run under agent) (docs)

Fixes 🛠️

• Fixed bug where ChatInput would start large before initial screen resize
• Improved workspace rename UI experience (aed0c79)
• Fixed bug where Web Terminal wouldn't launch on SSH workspaces (ab873ab)
• Improved the performance of the background git fetching - users should observe far fewer Git lock issues

Features 🪄

• Docs now updated to the much prettier Mintlify (see here)
• Workspace name generation reworked to be faster and allow for user edits:

• Simplified runtime selection (see above screenshot)
• Added first class mux run CLI for scriptable tasks (docs)

Fixes 🛠️

• Fixed bug where chat wouldn't be all the way scrolled down upon first load (367fa4a)
• Many fixes related to auto-compact, context usage, and cost calculation
• Improved e2e testing
• Fixed a few bugs in dictation

Hotfix for c52ebea 🥵