## Summary - add `Feature::TerminalVisualizationInstructions` as `UnderDevelopment`, disabled by default - keep terminal visualization instructions inside the TUI package - append them to existing developer instructions for TUI start, resume, and fork flows only when enabled - intentionally do not apply them to `codex exec` ## Rollout Control behavior is unchanged. TUI dogfooders can enable `terminal_visualization_instructions`; no default user receives the new terminal-specific instructions. The shared visualization-selection rule is supplied separately through the `codex_proxy_model_3` Statsig layer for every target Codex model slug in the gated cohort. This TUI feature determines how to render an appropriate visualization on the terminal surface; the model-layer treatment determines when to use one. ## Validation - `cargo test -p codex-tui terminal_visualization_instructions_are_gated_for_all_tui_thread_flows --lib` - `cargo test -p codex-features --lib` - `cargo fmt --all -- --check` - `git diff --check` - GPT-5.4 and GPT-5.5 real prompt-pipeline smoke tests: both visualized the positive mapping case, abstained on the negative route case, and passed exact prompt-stack verification on CLI and App - refreshed onto current `main` with a clean merge and reran the focused validation The full 53-probe all-model treatment comparison and requested production coding evals remain rollout gates before broadening beyond the initial employee cohort. This PR remains open for normal human review.
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.
