#Codex SDK

Codex CLI 0.154.0 and SDK 0.154.0: Worktrees, ExternalMessage, and the ultra Reasoning Effort

Codex CLI 0.154.0 (2026-09-09) ships experimental worktrees, inline Q&A, a shared Windows server, and drops the mcp-server entry point; SDK 0.154.0 adds max/ultra efforts and ExternalMessage. Voice is build-side only.