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Codex CLI 0.27.0 release notes
- Version
- 0.27.0
- Released
- Status
- Stable release
What's new in Codex CLI 0.27.0
The official notes for Codex CLI 0.27.0 list 5 changes: 1 performance improvement and 4 other changes.
- 1 performance improvement
- 4 other changes
Highlights
- performance improvement Performance/cleanup: remove unnecessary flush() calls.
- other change MCP stability: drop mutexes earlier and avoid lock ordering pitfalls.
- other change Channel reliability: switch to unbounded channel to prevent stalls.
- other change CI: fix release build; specify --profile for cargo clippy.
- other change Docs: safer Homebrew snippet; suggest just fix -p in AGENTS.md.
Our short summary: changes are counted and classified automatically from the official notes, and highlights are shortened. The complete, authoritative list is in the official release notes on GitHub.
Full release notes on GitHub (Codex CLI 0.27.0)
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