OpenAI Codex 0.156.0 adds a fullscreen TUI, a /usage analytics dashboard, and turns worktree sessions on by default
OpenAI published Codex 0.156.0 for the Rust CLI on 22 September at 19:51 UTC. New features include an optional fullscreen TUI with transcript search, a /usage analytics dashboard, worktree sessions enabled by default, and a /daemon menu for the local background server.
Image: GitHub, via OpenAI
Why it mattersA team on Codex gets one place to see token totals and plugin activity in the CLI itself, and worktree isolation by default lowers the odds of one agent stepping on a colleague's tree.
The OpenAI Codex team published the 0.156.0 release of its Rust CLI on 22 September at 19:51 UTC, and this one carries four changes a Codex user notices on the first launch. The full changelog is on GitHub, along with the compare page against 0.155.0.
The four features to notice
An optional fullscreen mode: /tui opens the CLI in an alternate-screen terminal UI with transcript search, mouse selection, and right-click copying. The old scrolling mode stays as the default, so the switch is opt-in per launch.
A usage dashboard inside the CLI: /usage opens an account analytics view with account and consumer Top chats, token totals, plugin and skill activity, and gated plan usage history. Every card refreshes on identity changes, and mouse navigation is enabled.
Worktree sessions on by default: worktree support was optional. In 0.156.0 the release notes say "worktree support is now enabled by default," and there is a new agent command center that lets a user filter tasks by status and create worktree sessions from it.
A /daemon menu, and a --no-daemon flag: the local background server, which Codex has been using to share state across sessions, is now managed through a menu inside the CLI. Passing --no-daemon on launch bypasses it entirely.
What is gone
Two deprecations. The friendly and pragmatic personality settings no longer choose response styles, and the release notes say to stop relying on them. The thread/rollback API is removed, so any tooling that called it needs to move to the current thread APIs. Both are called out at the top of the changelog.
What else moved
Voice conversations are enabled by default in the TUI, with an F8 toggle, a /voice settings picker, and bundled audio runtimes for Linux and Windows. Six new terminal themes ship with theme-aware accents, and the TUI now renders Mermaid diagrams and inline display equations. Clipboard forwarding in tmux and SSH sessions is fixed, and Plan mode is restored when resuming a session. Bundled TLS is on OpenSSL 3.6.4 for Linux musl builds.
What it changes for a team on Codex
A team already running Codex updates and gets three practical shifts: /usage is the first place inside the CLI where a lead can see whose plugins and skills are pulling most of the tokens, worktrees are on for every session so a run against a file another colleague is editing is less likely, and the fullscreen mode makes long agent transcripts searchable inside the tool rather than being scrolled to. /daemon closes a support case: the background server is now visible and stoppable from the CLI. A user on friendly or pragmatic personality settings will not see the response change they expected; the documentation says the flag is retired.
Source
Primary source: openai/codex release rust-v0.156.0 on GitHub, 22 September 2026.
This item was written by an AI system from the linked source. Reveneau is responsible for what it publishes.
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