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Codex CLI Adds Experimental Voice Conversations in the Terminal

CodexView original changelog

Codex CLI 0.155.0 introduced an experimental /voice command that lets developers hold a live spoken conversation with Codex directly in the terminal, complete with live transcripts and microphone controls, gated behind the /experimental menu while OpenAI tests it. The same release added Touch ID verification for MCP tool requests on supported Macs, expanded the codex agents overview with task hiding, archiving, and deletion plus worktree ownership details, and put live reasoning summaries and completion timestamps into the TUI status row.

Key Takeaways

  • Voice conversations arrive in the Codex CLI terminal for the first time, via an experimental /voice command with live transcripts and microphone controls.
  • The feature is gated behind /experimental, signaling OpenAI is still validating it before it becomes a default command.
  • Touch ID verification now protects MCP tool requests in local TUI sessions on supported Macs.
  • The codex agents overview gained task hiding, archiving, and deletion, plus worktree ownership details.
  • The TUI status row now shows live reasoning summaries during a turn and completion timestamps after successful turns.
  • Codex CLI 0.155.0 is the only stable release in the window; everything newer on npm is an alpha prerelease.

Voice Finally Reaches the Terminal

Codex CLI 0.155.0, released September 17, 2026, added an experimental /voice command that opens a live spoken conversation with Codex inside the terminal itself. OpenAI's release notes describe it as "experimental /voice conversations with live transcripts and microphone controls on supported builds, enabled through /experimental" — so it is opt-in rather than on by default.

This is a new interaction model for the terminal-based CLI: instead of typing prompts, a developer can speak a request, watch it transcribed live on screen, and control the microphone directly from the session. Because it sits behind /experimental, OpenAI is signaling that it is still being tested and may change before becoming a default command. It is a different feature from the ChatGPT desktop app's earlier "Codex Voice" (powered by GPT-Live, shipped July 2026), which lets a user talk to Codex from the graphical ChatGPT app rather than the command-line tool.

A More Informative TUI

Alongside voice, the terminal UI became more transparent about what Codex is doing. The status row now shows live reasoning summaries while a turn is in progress, and completion timestamps after successful turns, giving developers a clearer sense of how long a task took and what Codex was working through without scrolling back.

Touch ID for MCP Requests

For Mac users who connect local MCP (Model Context Protocol) servers to Codex, 0.155.0 added Touch ID verification for MCP requests in local TUI sessions. A supported Mac can now ask for a fingerprint confirmation before an MCP tool call goes through, adding a physical checkpoint to an increasingly common way of extending Codex with external tools.

Better Task and Worktree Management

The codex agents overview gained task hiding, archiving, and deletion, along with worktree ownership details and confirmed deletion of clean managed worktrees. Developers running many parallel sessions and git worktrees get more direct control over cleaning up finished work without leaving the dashboard.

Other Changes

The release also shipped reliability and security fixes: incoming prompts are preserved when pre-turn compaction fails, MCP servers report expired OAuth credentials more accurately, cached WebSocket state is reset when auth changes, and Amazon Bedrock users can obtain AWS credentials from configured commands. Configurable daemon update schedules were added, with saved threads and active goals recovering after daemon restarts.