Eric Traut
ddfa691752
## Summary Fixes #19022. `codex exec --json` currently emits `turn.completed.usage` with input, cached input, and output token counts, but drops the reasoning-token split that Codex already receives through thread token usage updates. Programmatic consumers that rely on the JSON stream, especially ephemeral runs that do not write rollout files, need this field to accurately display reasoning-model usage. This PR adds `reasoning_output_tokens` to the public exec JSON `Usage` payload and maps it from the existing `ThreadTokenUsageUpdated` total token usage data. ## Verification - Added coverage to `event_processor_with_json_output::token_usage_update_is_emitted_on_turn_completion` so `turn.completed.usage.reasoning_output_tokens` is asserted. - Updated SDK expectations for `run()` and `runStreamed()` so TypeScript consumers see the new usage field. - Ran `cargo test -p codex-exec`. - Ran `pnpm --filter ./sdk/typescript run build`. - Ran `pnpm --filter ./sdk/typescript run lint`. - Ran `pnpm --filter ./sdk/typescript exec jest --runInBand --testTimeout=30000`.
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.