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Download Codex

Recommended Installation

Please install or upgrade to the latest Codex App, Codex CLI, or IDE Extension. Old clients may still send gpt-5.3-codex and other deprecated models from older ChatGPT login flows, causing requests to fail. PhotonMark currently supports gpt-5.3-codex-spark, gpt-5.4-mini, gpt-5.4, gpt-5.5. New models are added to the public billing table only after official OpenAI prices and multipliers are clear.

Codex App

Best for local projects and graphical workflows. Officially supports macOS and Windows.

View App Downloads

Codex CLI

Best for terminals, servers, and repeatable configuration. Supports macOS, Linux, and Windows.

View CLI Downloads

IDE Extension

Best for in-editor workflows such as VS Code, Cursor, and Windsurf.

Official Install Page

Codex App Downloads

PlatformOSArchitectureFileSizesha256Downloads
Codex App for macOS Apple Silicon macOS arm64 Codex.dmg 387.3 MB 23ead69adccc6910912cef1e0c73fb7667e4d07fcce7cfcad45eae54d38ad897
Codex App for macOS Intel macOS x86_64 Codex-latest-x64.dmg 378.0 MB 0740aa2b28dc9e3e97270575802ac381042e671e5243e70856e6e04aba7453b3
Codex App for Windows Windows auto Codex-Windows-Store-installer.exe 1.2 MB 733a772c57a871036cf3fa7e57bd32fa489bc68c891363f4efa22caf06a7609a

Codex CLI Direct Downloads

Current latest version 0.137.0, published at 2026-06-04T01:17:20Z。

Official npm install

If Node.js / npm is already installed, you can also install Codex CLI with npm following the OpenAI quickstart.

npm install -g @openai/codex

Official quickstart

macOS / Linux / Windows

Official Homebrew install

macOS users can also install with Homebrew cask.

brew install --cask codex

macOS / Linux installer

0.137.0 · current GitHub latest release

curl -fsSL https://chatgpt.com/codex/install.sh | sh

Windows installer script

0.137.0 · current GitHub latest release

powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"

PlatformVersionOSArchitectureFileSizesha256Downloads
macOS Apple Silicon 0.137.0 macOS arm64 codex-aarch64-apple-darwin.tar.gz 78.1 MB 628d2278b1fa2a467452635f2fd5aaeee98de4a94f2af06031e4790da6844046
macOS Intel 0.137.0 macOS x86_64 codex-x86_64-apple-darwin.tar.gz 87.9 MB 32206ff8e4edb3422832b24d25a521246e4478b67bab2ec63bee632fdf94b306
Linux arm64 0.137.0 Linux arm64 codex-aarch64-unknown-linux-musl.tar.gz 77.2 MB 1b9cae96e27f5da2752054a5bba9204d486939ea60c65df4ba4a638458734bda
Linux x86_64 0.137.0 Linux x86_64 codex-x86_64-unknown-linux-musl.tar.gz 83.8 MB d96e88313b95597e9cbb8704f6db16dbb81c07142b08cfb628479ab433696931
Windows arm64 0.137.0 Windows arm64 codex-aarch64-pc-windows-msvc.exe.zip 76.7 MB 91a524b46640e03639cace85154ab08872f8379d0e1831b8235fb781fa8fed55
Windows x86_64 0.137.0 Windows x86_64 codex-x86_64-pc-windows-msvc.exe.zip 83.2 MB 66c114e17a90547ed95af3400df40cc95dd32c1a46bc95faae787e8d5ffc1691

After installation, run codex and log in to ChatGPT. When you need PhotonMark service, copy the dedicated config from the dashboard.