Codex CLI 0.156 adds voice by default, fullscreen TUI, and /usage
The terminal agent gets hands-free voice, a token dashboard, and inline diagrams — and Anthropic's plugin marketplace now installs into Claude Code.
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Voice is on by default now
Codex 0.156 turns on voice conversations out of the box — F8 toggles it, and `/voice settings` picks the runtime. Audio runtimes ship bundled for Linux and Windows, so there's no extra install: you can talk a task through while your hands stay on the keyboard.
/usage tells you where the tokens went
A new `/usage` dashboard breaks down account usage, token totals, and activity per plugin and per skill. If you keep bumping plan limits, this is the first native way to see which skills are eating your budget before you get throttled.
Fullscreen TUI, six themes, inline Mermaid
`/tui` opens an optional fullscreen interface with transcript search, mouse selection and right-click copy, plus six new themes. Responses now render Mermaid diagrams and display equations inline — so the agent can sketch an architecture or lay out math right in the terminal.
Windows sandbox holes closed; /daemon control added
The release closes Windows sandbox isolation gaps around inbound connections, privileged sockets and read-only file handles, and updates TLS deps (OpenSSL 3.6.4 on Linux musl). You can now update the background server via `/daemon` or skip it with `--no-daemon`. Worth updating if you run Codex in sandboxed or auto modes.
Elsewhere: the Claude Marketplace opens to Claude Code
Anthropic launched the Claude Marketplace — 2,000+ connectors and plugins built on MCP and Agent Skills, plus agents and service partners. Install one into Claude Code with `/plugin install <name>@claude-plugins-official`, or list your own; teams can also put committed Anthropic spend toward partner software.