Best of N

Codex can now generate multiple responses simultaneously for a single task, helping you quickly explore possible solutions to pick the best approach.
Fixes & improvements
Added some keyboard shortcuts and a page to explore them. Open it by pressing ⌘-/ on macOS and Ctrl+/ on other platforms.
Added a “branch” query parameter in addition to the existing “environment”, “prompt” and “tab=archived” parameters.
Added a loading indicator when downloading a repo during container setup.
Added support for cancelling tasks.
Fixed issues causing tasks to fail during setup.
Fixed issues running followups in environments where the setup script changes files that are gitignored.
Improved how the agent understands and reacts to network access restrictions.
Increased the update rate of text describing what Codex is doing.
Increased the limit for setup script duration to 20 minutes for Pro and Business users.
Polished code diffs: You can now option-click a code diff header to expand/collapse all of them.