## Summary - add a defaulted `ModelInfo.use_responses_lite` catalog field - support serializing `reasoning.context` while preserving the existing effort and summary path - has not been turned on for any models yet I've added an override to parallel tools if responses_lite is on. I've also forced persistent reasoning when using responses_lite. It would be ideal if we could centralize all the responses_lite plumbing, but I think this is best for now to keep the plumbing & diffs small. ## Testing - `cargo test -p codex-protocol model_info_defaults_availability_nux_to_none_when_omitted` - `RUST_MIN_STACK=8388608 cargo test -p codex-core responses_lite_sets_all_turns_context_and_disables_parallel_tool_calls` - `RUST_MIN_STACK=8388608 cargo test -p codex-core configured_reasoning_summary_is_sent` - `cargo check -p codex-core --tests` - `RUST_MIN_STACK=8388608 cargo clippy -p codex-core --tests` (passes with pre-existing warnings in `codex-code-mode` and `codex-core-plugins`)
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
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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.
