Download Codex for Windows, macOS, and Linux. Get the CLI, IDE plugins, and desktop application — start building with AI in under five minutes.
One Codex download, endless possibilities — the Codex CLI, IDE plugins, and desktop app available for every major operating system.
Codex download is the starting point for every developer joining the platform. Whether you work on Windows, macOS, or Linux, the Codex download page provides the right package for your environment. The Codex CLI is the recommended starting download — a single binary that installs in seconds and provides every platform capability from your terminal. IDE plugins for VS Code, JetBrains, and Neovim bring Codex intelligence directly into your editor. The desktop application bundles everything with a visual interface for team management and analytics. Every Codex download comes with SHA-256 checksums for integrity verification and is digitally signed for your security.
The Codex download experience is designed to minimize friction. The CLI installer auto-detects your operating system, shell, and development environment — no manual configuration required. IDE plugins install from their respective marketplaces in seconds. The desktop application provides a guided setup wizard that walks through authentication and project setup step by step. After your Codex download completes, you will be generating AI-powered code within five minutes. All Codex download packages are updated simultaneously on a unified release cadence, so every interface always runs the same platform version.
Choose your Codex download — CLI, IDE plugin, or desktop application — each package is digitally signed with published checksums.
| Codex Download | Platform | Install Method | Size | Version |
|---|---|---|---|---|
| Codex CLI | macOS | Homebrew | ~45 MB | v3.4.1 |
| Codex CLI | Windows | MSI Installer | ~52 MB | v3.4.1 |
| Codex CLI | Linux | deb / rpm / AppImage | ~48 MB | v3.4.1 |
| VS Code Extension | All | VS Code Marketplace | ~12 MB | v3.4.1 |
| JetBrains Plugin | All | JetBrains Marketplace | ~15 MB | v3.4.1 |
| Neovim Plugin | All | LuaRocks / GitHub Releases | ~8 MB | v3.4.1 |
| Desktop App | macOS / Windows / Linux | .dmg / .exe / AppImage | ~180 MB | v3.4.1 |
Your Codex download is complete — here is exactly what to do next, from authentication to your first AI-generated feature.
After your Codex download finishes, the first step is authentication. Open your terminal and run codex auth. The CLI opens your browser for OAuth2 authentication — sign in with your Codex account and the token is stored securely in your system credential store. If you do not yet have an account, visit codex.gr.com and create one — the free Starter plan requires no credit card and includes 500 generations per month. Once authenticated, navigate to any project directory and run codex init. The Codex download includes automatic environment detection — the CLI identifies your language, framework, and package manager and prompts you for style preferences that cascade to every future generation.
Now you are ready to generate code. Run codex generate "a health check endpoint that returns JSON with uptime and version" and watch the Codex platform produce a working implementation. The CLI shows a diff before writing changes — review, modify, or accept each generation. After your first generation, try the Codex download companion features: codex review --diff HEAD~1 to review recent changes, codex test --all to generate and run tests, and codex deploy --env staging to push to your staging environment. The complete Codex download experience takes you from zero to shipping in under ten minutes.
The Windows Codex download includes an MSI installer with automatic PATH configuration and PowerShell completion.
The Windows Codex download is distributed as a signed MSI installer. Download and run the installer — it requires administrator privileges for PATH configuration. The installer places the Codex CLI binary in Program Files and adds it to both the system PATH and PowerShell profile. Shell completion for PowerShell is registered automatically. Windows Terminal, CMD, and PowerShell are all supported as the CLI environment. The Codex download for Windows also includes the desktop application installer as a separate download — it integrates with the Windows taskbar and notification system for background review alerts and deployment status updates.
After the Windows Codex download completes, open PowerShell or Windows Terminal and verify the installation: codex --version should display v3.4.1. Authenticate with codex auth — note that on Windows, credentials are stored in the Windows Credential Manager. The VS Code extension Codex download is available directly from the VS Code Marketplace within the editor — search for "Codex" in the Extensions panel and install with one click. The JetBrains plugin Codex download is available from the JetBrains Marketplace — accessible from Settings > Plugins within any JetBrains IDE.
The macOS Codex download via Homebrew is the fastest path — one command, fully configured, with native Apple Silicon support.
The macOS Codex download is delivered primarily through Homebrew. Run brew install codex-gr/tap/codex to download and install the Codex CLI in a single step. Homebrew handles the binary placement, PATH configuration, and shell completion setup automatically. The macOS Codex download includes native ARM64 binaries for Apple Silicon Macs — no emulation, no Rosetta dependency. For environments without Homebrew, a standalone .pkg installer is available from the download center. The desktop application Codex download for macOS is distributed as a signed .dmg that mounts and installs with standard drag-to-Applications behavior.
After your macOS Codex download, verify with codex --version. Authenticate with codex auth — on macOS, credentials are stored in the Keychain. The VS Code extension and JetBrains plugin Codex downloads work identically on macOS through their respective marketplaces. The Neovim plugin Codex download is available through LuaRocks or direct GitHub release — the codex-neovim package provides LSP integration, completion sources, and command palette entries for all Codex operations within Neovim.
The Linux Codex download supports Debian, RHEL, Arch, and generic Linux — native packages, no snap dependency required.
The Linux Codex download is available in distribution-native package formats. Debian and Ubuntu users add the Codex APT repository and run apt install codex-cli. Fedora and RHEL users add the DNF repository and run dnf install codex-cli. Arch Linux users install from the AUR. For distributions without package manager support, the AppImage Codex download runs on any Linux with kernel 5.4+. The Flatpak Codex download is available from Flathub for the desktop application. All Linux Codex downloads include shell completion for Bash, Zsh, and Fish.
For CI/CD environments and headless servers, the Codex download includes a minimal installation profile. Install with --headless flag to skip interactive features and reduce the disk footprint to under 200 MB. The headless Codex download is ideal for Docker containers — an official Codex Docker image is available with the CLI pre-installed and configured for non-interactive operation. CI/CD pipelines can script the Codex download and verification process: download the package, verify the checksum, install, authenticate via environment variable, and begin automated code generation and review — all without human interaction.
Every Codex download includes a SHA-256 checksum — verify in one terminal command before installing.
Codex download security begins with cryptographic verification. Each Codex download package has a corresponding SHA-256 checksum published alongside the release. On macOS or Linux, verify with sha256sum /path/to/codex-download.deb — compare the output against the published checksum. On Windows, run Get-FileHash -Algorithm SHA256 C:\Downloads\codex-download.msi in PowerShell. If the checksums do not match, delete the file immediately and download a fresh copy from this page. All Codex download packages are also digitally signed — macOS Gatekeeper and Windows SmartScreen validate signatures before allowing installation. If either operating system warns about an unsigned binary, do not proceed — that Codex download has been tampered with or corrupted during transfer.
Codex download is available for Windows, macOS, and Linux — Homebrew, MSI, APT, RPM, or AppImage depending on your platform. All install in under thirty seconds.
The Codex download experience is tailored to each platform. macOS users get the fastest path via Homebrew: one command installs the CLI with shell completion configured automatically. Windows users download a signed MSI installer that handles PATH configuration, PowerShell completion, and credential storage. Linux users on Debian/Ubuntu add the APT repository; Fedora/RHEL users add the DNF repository; Arch users install from AUR; everyone else can use the AppImage Codex download which runs on any Linux with kernel 5.4+. IDE plugin Codex downloads happen through their respective marketplaces — search for "Codex" in VS Code Extensions, JetBrains Plugins, or LuaRocks. The desktop application Codex download is available as a .dmg (macOS), .exe installer (Windows), or AppImage (Linux).
Three steps: authenticate with codex auth, initialize your project with codex init, and generate your first feature with codex generate. Five minutes, start to finish.
The post-Codex download workflow is designed for immediate productivity. Step one: authenticate. Run codex auth and sign in through your browser — credentials are stored securely in your OS credential store. Step two: initialize. Navigate to a project directory and run codex init — the platform auto-detects your language, framework, and package manager. Step three: generate. Describe a feature in natural language and watch the Codex platform produce a working implementation that fits your project's existing conventions. After these three steps, explore automated code review with codex review, test generation with codex test, and deployment with codex deploy.
The Codex download is completely free. The Starter plan includes 500 AI code generations per month at no cost, with no credit card required.
Your Codex download costs nothing and never expires. The free Starter plan provides 500 AI code generations per month — enough to build several full features, scaffold new projects, and explore the platform's capabilities. There is no time limit on the Starter plan, no credit card required, and no automatic conversion to paid. If you need unlimited generations, IDE plugin support, automated code review, and team dashboards, the Professional plan is $29 per developer per month. The Codex download itself is the same binary regardless of your plan — upgrading from Starter to Professional does not require reinstalling anything. Your Codex download remains the same software; only the feature limits change based on your plan.
Compare the SHA-256 checksum of your Codex download against the published value. One terminal command confirms your download has not been tampered with.
Codex download integrity verification takes a single command. On macOS or Linux, run sha256sum /path/to/downloaded-file and compare the output against the checksum published on this page. On Windows PowerShell, use Get-FileHash -Algorithm SHA256. A matching checksum confirms the Codex download is authentic and intact. All Codex downloads are also digitally signed with a code-signing certificate — macOS Gatekeeper and Windows SmartScreen perform this verification automatically before allowing installation. If either operating system warns about an unsigned or modified binary, discard that Codex download immediately and obtain a fresh copy.
Yes — the Codex download includes a headless CLI package optimized for CI/CD runners with JSON output, structured exit codes, and environment variable configuration.
The Codex download for CI/CD environments is the same binary with a headless configuration profile. Install with the --headless flag to skip interactive prompts and reduce the disk footprint. Authenticate using the CODEX_API_KEY environment variable — no browser interaction required. Every command supports --output json for machine-parseable results and uses structured exit codes (0 for success, 1 for warnings, 2 for errors). An official Docker image pre-configured for CI/CD use is available. Common CI patterns include: running codex review on every pull request, generating boilerplate for new microservices, and running weekly codebase analysis reports — all automated through your existing pipeline configuration.
Whether you are looking to download Codex for the first time, explore the Codex CLI for terminal-native development, or understand how Codex AI transforms your engineering practice, the platform provides integrated tools for every stage of software delivery. The AI code generation engine produces idiomatic code across 40+ languages, while intelligent code review catches bugs before they reach production. Teams can automate testing with the integrated testing suite, debug efficiently with automated debugging, and enforce quality standards with deep code analysis.
Developers integrating Codex into their toolchain start with CLI installation and IDE plugin setup for their preferred editor. The comprehensive API enables custom automation, CI/CD pipeline integration connects Codex to your deployment workflow, and Docker containerization simplifies environment configuration. For deeper integration, see the full documentation covering every feature in detail.