Codex CLI 0.129.0 release

What changed

Codex CLI 0.129.0 landed with modal Vim editing inside the composer. Users can now switch into a full Vim mode without leaving the main input area.

The TUI received a redesign focused on resuming and forking sessions. Plugin management added workspace sharing so teams can push and pull plugin sets across machines.

Linux sandbox reliability improved through tighter file and process controls. These updates arrived in the May 19, 2026 release.

Why it matters

Solo builders who rely on Codex for daily coding now get fewer context switches when editing prompts or code snippets. The session resume and fork changes reduce the friction of starting from a previous state or branching an experiment.

Workspace plugin sharing lowers the setup cost for consistent environments across projects. Stronger Linux sandboxing addresses a common pain point for users running agents on remote servers or containers.

How to use it

Run npm install -g @openai/codex@0.129.0 to pull the update. Open any Codex session and press the new keybinding to enter modal Vim editing in the composer.

Check the updated TUI help menu for the redesigned resume and fork commands. Configure shared plugin workspaces through the new plugin management flags documented in the CLI reference.

Watch for

Stable adoption will show up as fewer reported sandbox escapes on Linux and higher usage of the fork command in public workflows. The next signal to track is whether OpenAI extends the same modal editing and workspace sharing to the IDE extension.