Codex 0.156.0 introduces a fullscreen terminal UI with transcript search, mouse selection, and copying. Voice conversations are now enabled by default with an F8 toggle and voice picker. GPT-6 Sol and Luna models roll out at lower token costs for complex coding and high-volume tasks across Plus, Pro, Business, Enterprise, and Edu tiers. New features include a usage analytics dashboard, task filtering and worktree sessions in the agent command center, six terminal themes, Mermaid diagram rendering, and equation display in responses. Update the local background server via /daemon or skip it with --no-daemon.