OpenAI refreshes Codex CLI: full-screen interface, parallel work, scrollback-free history

#What happened

OpenAI's developer community announced a major Codex CLI refresh: a new full-screen terminal interface with better readability and ways to manage parallel work, all inside the terminal. The announcement was posted on September 30, 2026 in the Codex CLI section of community.openai.com.

#What's new

• New full-screen interface, better readability, and ways to manage parallel work in the terminal.
• Older history loads as you scroll, beyond the terminal's scrollback limit.
• The composer stays pinned and ready for the next message, so long sessions can be explored without scrolling back to type.
• Context: OpenAI's DevDay recap describes a new /agents view for delegating work and tracking multiple tasks, and the 0.159.x stable CLI line adds opt-in instant_interrupt for steering a running agent mid-response, a compact welcome screen, and broader native Mermaid rendering.

#What it means

For terminal-first developers, the refresh gives visibility over delegated and parallel work without leaving the CLI — a fitting complement to the post-DevDay push of cloud environments and parallel agent workflows in Codex.

#Why it matters

For terminal-first developers, the refresh gives visibility over delegated and parallel work inside the CLI itself, pairing a full-screen interface with parallel-work management, history that loads beyond the scrollback limit, and a pinned composer — complementing the parallel agent workflows in Codex.

#Sources

• https://community.openai.com/t/major-codex-cli-refresh-with-a-new-look-and-powerful-new-capabilities/1402400
• https://github.com/openai/codex/releases
• https://opentools.ai/news/codex-cli-voice-agents-view-worktrees-update

Verified September 30, 2026