OpenAI · 2026-09-22 · notable
Codex CLI 0.156.0 — an optional fullscreen UI with transcript search
Codex CLI 0.156.0 adds an optional fullscreen terminal UI behind /tui, with transcript search, mouse selection and right-click copying. Voice conversations are now on by default, and a /usage dashboard shows token totals.
A fullscreen terminal UI, searchable transcripts and voice on by default land in Codex CLI 0.156.0.
What is it?
An optional fullscreen interface is the headline of Codex CLI 0.156.0. Typing /tui switches the next launch into it, bringing transcript search, mouse selection and right-click copying to a terminal agent that until now scrolled past in plain lines. Six new themes arrive alongside it, and responses can render Mermaid diagrams and display equations directly.
How does it work?
Voice conversations, which shipped behind the experimental flag in 0.155.0, are on by default in this release, with an F8 toggle, a /voice settings picker for choosing a voice, and bundled audio runtimes for Linux and Windows. Worktree support also flips on by default: the agent command center can create worktree sessions and filter tasks by status. A /usage dashboard reports account usage, token totals and plugin and skill activity, and /daemon updates the local background server, which --no-daemon skips.
Why does it matter?
Searching a long agent transcript used to mean scrolling, and copying a block of output fought the terminal's own selection — the fullscreen mode removes both frictions for people who keep a session open all day. The release also closes three sandbox isolation gaps: inbound Windows connections, privileged Linux and macOS sockets, and writes through read-only macOS file handles. Sessions survive more failure cases too, keeping streamed answers and plans when a turn fails or is interrupted, and restoring Plan mode when a session is resumed.
Who is it for?
Codex CLI users who keep long terminal sessions
Try it
npm i -g @openai/[email protected], then /tui