**Stack position:** [1 of 7] ## Summary The first three PRs in this stack are a cleanup pass before the actual thread settings API work. Today, core has several overlapping "user input" ops: `UserInput`, `UserInputWithTurnContext`, and `UserTurn`. They differ mostly in how much next-turn state they carry, which makes the later queued thread settings update harder to reason about and review. This PR starts that cleanup by adding the shared `ThreadSettingsOverrides` payload and allowing `Op::UserInput` to carry it. Existing variants remain in place here, so this layer is mostly a behavior-preserving API shape change plus mechanical constructor updates. ## End State After PR3 By the end of PR3, `Op::UserInput` is the only "user input" core op. It can carry optional thread settings overrides for callers that need to update stored defaults with a turn, while callers without updates use empty settings. `Op::UserInputWithTurnContext` and `Op::UserTurn` are deleted. ## End State After PR5 By the end of PR5, core will have only two ops for this area: - `Op::UserInput` for user-input-bearing submissions. - `Op::ThreadSettings` for settings-only updates. ## Stack 1. [1 of 7] [Add thread settings to UserInput](https://github.com/openai/codex/pull/23080) (this PR) 2. [2 of 7] [Remove UserInputWithTurnContext](https://github.com/openai/codex/pull/23081) 3. [3 of 7] [Remove UserTurn](https://github.com/openai/codex/pull/23075) 4. [4 of 7] [Placeholder for OverrideTurnContext cleanup](https://github.com/openai/codex/pull/23087) 5. [5 of 7] [Replace OverrideTurnContext with ThreadSettings](https://github.com/openai/codex/pull/22508) 6. [6 of 7] [Add app-server thread settings API](https://github.com/openai/codex/pull/22509) 7. [7 of 7] [Sync TUI thread settings](https://github.com/openai/codex/pull/22510)
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.
