Codex release notes — page 7
Browse Codex release summaries and publication dates. Codex 0.53.0 through Codex 0.32.0. Open each official GitHub release for the complete changelog.
Saved release summaries, not complete changelogs. Each entry links to the official release; new entries appear after a successful sync.
Codex 0.53.0
Highlights · Fixing error 400 issues · Improve sandboxing for Java · PRs · 5897 – codex: add developer instructions · 5939 – app-server:…
Read the official release notesCodex 0.52.0
Highlights · TUI polish: queued messages visible during streaming; Windows auto-mode guidance; undo op; compaction prompt configurable. · Images: client-side image resizing; prevent crashes…
Read the official release notesCodex 0.50.0
Highlights · Improved /feedback to get better diagnostics. Please use it to report any issues. (#5661, #5663). · Merged PRs · 5536 — Added…
Read the official release notesCodex 0.49.0
Highlights · No major changes comparing to v0.48.0 - v0.49.0 is used for testing homebrew upgrade script.
Read the official release notesCodex 0.48.0
Highlights · --add-dir to add an additional working directory. · Many MCP improvements: · stdio servers now use a new client backed by the…
Read the official release notesCodex 0.47.0
Highlights · Improvements and bug-fixes in Codex CLI · Code signing binaries on MacOS · Auto update banner · :new: Warning when enabling "full…
Read the official release notesCodex 0.46.0
Highlights · Improved MCP support · We are in the middle of significantly improving support for connecting to MCP servers including support for streamable…
Read the official release notesCodex 0.45.0
Breaking changes · codex login --api-key was replaced with codex login --with-api-key that reads the key from stdin to improve security. · Sample usage:…
Read the official release notesCodex 0.44.0
Highlights: · New UI refresh! Updated chat composer, bottom pane, model picker, and upgrade nudge (#4240, #4316, #4178, #4405) · Custom prompts now support…
Read the official release notesCodex 0.42.0
Notable Changes · Experimental Rust SDK–based MCP client introduced (#4252) · New responses-api-proxy component to simplify and secure response handling/proxying (#4246) · Added secure…
Read the official release notesCodex 0.41.0
Highlights: · Rate limits visibility: You can see when is your limits resetting (#4111) and see your usage when rate limited (#4102) · You…
Read the official release notesCodex 0.40.0
Notable Changes · Default model is now gpt-5-codex (#4076) · Autocompaction is triggered automatically for gpt-5-codex when hitting 220k tokens (#4093) · Usage limits…
Read the official release notesCodex 0.39.0
new /review command introduced in #3774 · Merged PRs: · [#3874] fix: ensure cwd for conversation and sandbox are separate concerns (#3874) · [#3774]…
Read the official release notesCodex 0.38.0
This release includes only one change on top of 0.37.0, which is a fix to the npm-publish step in the release process (#3806). Updating…
Read the official release notesCodex 0.37.0
Mostly small quality-of-life fixes in this release. · Highlights · Updated the npm release process to use "trusted publishing" (#3431). Though apparently there was…
Read the official release notesCodex 0.36.0
Breaking change: OPENAI_API_KEY is no longer read from the environment · API login is no longer implicit; we do not pick up OPENAI_API_KEY from…
Read the official release notesCodex 0.35.0
See 0.36.0
Read the official release notesCodex 0.34.0
3436: hotfix for issue that prevented Codex from initializing external MCP servers · Merged PRs · [#2799] Persist model & reasoning changes (#2799) ·…
Read the official release notesCodex 0.33.0
Codex 0.33.0 · Key change is which reverts because it introduced a regression. · Try out the new Markdown renderer on #3396. · Merged…
Read the official release notesCodex 0.32.0
Codex 0.32.0 · MCP: add UA suffix when acting as a server; a few stability/compat tweaks · OSS: Broader apply_patch OSS compatibility. · Rollouts:…
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