## Summary Updates Codex's bundled OpenAI Docs skill for GPT-5.6. - resolves latest/current/default-model requests through the machine-readable `latest-model.md` contract - fetches the exact prompting and migration guide URLs returned by the live docs - preserves explicitly named GPT-5 model targets - adds bundled GPT-5.6 Sol, Terra, and Luna migration judgment - adds a POSIX resolver wrapper plus a CommonJS entry point for Windows - skips incompatible Node.js runtimes before trying Codex's bundled/system fallbacks ## Developer impact The bundled system skill follows the live GPT-5.6 docs contract and can resolve current guidance after installation on POSIX and Windows environments. ## Validation - skill validator: passed - live resolver smoke test returned `gpt-5.6-sol` and both standalone guide URLs - CommonJS and POSIX shell syntax checks: passed - non-executable installed-wrapper invocation through `sh`: passed - incompatible `$NODE` fallback to the bundled Node.js runtime: passed - `git diff --check`: passed - migration eval: 30/30 passed, 0 critical failures - latest-model/prompting routing eval: 33/33 passed, 0 critical failures `just fmt` was not run because `just` is unavailable in this environment; the change only touches bundled Markdown and JavaScript/shell assets.
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
