## Summary Adds main-chat shortcuts for changing reasoning effort one step at a time: - `Alt+,` lowers reasoning (has the `<` arrow on the key) - `Alt+.` raises reasoning (similarly, has the `>` arrow) The shortcut updates the active session only. It does not persist the selected reasoning level as the default for future sessions. In Plan mode, it applies temporarily to Plan mode without opening the global-vs-Plan scope prompt. ## Details The shortcut uses the active model preset to decide which reasoning levels are valid. If the current session has no explicit reasoning effort, it starts from the model default. Each keypress moves to the next supported level in the requested direction. The shortcut only runs from the main chat surface. If a popup or modal is open, input remains owned by that UI. In Plan mode, the shortcut updates the in-memory Plan reasoning override directly. The model/reasoning picker still keeps the existing scope prompt for explicit picker changes. ## Notes Ctrl-plus and Ctrl-minus were considered, but terminals do not deliver those combinations consistently, so this PR uses Alt shortcuts instead. If the current effort is unsupported by the selected model, the shortcut skips to the nearest supported level in the requested direction. If there is no valid step, it shows the existing boundary message. ## Tests - `cargo test -p codex-tui reasoning_shortcuts` - `cargo test -p codex-tui reasoning_effort` - `cargo test -p codex-tui reasoning_shortcut` - `cargo test -p codex-tui footer_snapshots` - `cargo test -p codex-tui` - `just fix -p codex-tui` - `./tools/argument-comment-lint/run.py -p codex-tui -- --tests` --------- Co-authored-by: Eric Traut <etraut@openai.com>
npm i -g @openai/codex
or brew install --cask codex
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
Install globally with your preferred package manager:
# 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.
