Show Notes
This episode covers the latest Codex terminal release, including the new rate-limit fallback to GPT-6 Luna, the model picker split between Luna and Sol, and the upgraded fullscreen /tui experience with better search, copying, and tmux/SSH paste handling.
We also dig into /usage analytics, default worktrees for subagents, preserved streamed output on failures, /daemon updates, native Mermaid and math rendering, voice mode defaults, and several important security fixes.
More from The Codex Changelog
Codex 0.164.0 adds inline arguments to /model and /permissions, letting you switch models, reasoning effort, speed, and permission profiles without navigating pickers. Learn a practical workflow for saving those combinations in /presets, plus caveats around unsupported settings and resumed sessions.
A closed background-compaction channel could leave a Codex app-server turn stuck in progress; learn the reported recovery steps and the fix associated with PR 55581, whose release availability is still unclear. We also cover an open report of queued input disappearing when pre-turn compaction is interrupted, plus notes on CLI voice disconnects, installer download-host selection, and GPT 5.5 retirement.
Codex’s new PromptCacheKey policy lets hosts keep session identity separate from prompt-cache routing. Learn how to choose a shared key for parallel subagents, omit the field for compatible gateways, and reapply the policy when resuming threads—plus caveats for cache hits and prompt consistency. Also: updates to fork-prefix preservation, authentication errors, Guardian metrics, and compaction recovery.
Codex 0.164.0 alpha adds a startup check for feature-flag mismatches between the CLI and its background daemon, replacing a silent fallback to embedded mode with a recovery prompt. Learn how to configure feature overrides and reconnect safely, including the warning that restarting a shared daemon can interrupt active subagents; the episode also covers improvements to TUI question rendering, picker ranking, remote reconnects, and Linux launcher security.
Codex’s new PreModelRequest and PostModelRequest hooks expose model-call lifecycle data, including retries, status, and reported token usage. Learn how to register an async logging hook, account for cancelled turns, and check build availability, plus smaller security and workflow updates.