Codex CLI 0.155.1 restores default reasoning-summary off for new TUI sessions
OpenAI
OpenAI's Codex CLI shipped stable 0.155.1 on Sept 18; its only fix restores `none` as the default reasoning-summary mode for new TUI sessions so providers that cannot handle summaries stop rejecting requests. Sept 19-21 brought continuous 0.156.0-alpha.4 through alpha.12 CI builds with no noteworthy changelog.
Importance: 1/5
Patch release following the 0.155.0 stable covered on Sept 18
Sources
official
openai/codex releases