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## Why `/responses/compact` should preserve the request-affinity fields that apply to the active auth mode. ChatGPT-auth compact requests need the effective `service_tier`, and compact requests for every auth mode need the stable `prompt_cache_key`, so compaction does not quietly lose routing or cache behavior that normal sampling already has. This follows the request-parity direction from #20719, but keeps the net change focused on the compact payload fields needed here. ## What changed - Add `service_tier` and `prompt_cache_key` to the compact endpoint input payload. - Build the remote compact payload from the existing responses request builder output so `Fast` still maps to `priority` when compact sends a service tier. - Pass the turn service tier into remote compaction, but only include it in compact payloads for ChatGPT-backed auth. - Keep `prompt_cache_key` on compact payloads for all auth modes. - Add request-body diff snapshot coverage in `core/tests/suite/compact_remote.rs` for: - API-key auth reusing `prompt_cache_key` while omitting `service_tier` even when `Fast` is configured. - ChatGPT auth reusing both `service_tier` and `prompt_cache_key`. - Drive the snapshot coverage through five varied turns: plain text, multi-part text, tool-call continuation, image+text input, local-shell continuation, and final-turn reasoning output. ## Verification - Added insta snapshots for compact request-body parity against the last normal `/responses` request after five varied turns. - Not run locally per repo guidance; relying on GitHub CI for test execution. --------- Co-authored-by: Codex <noreply@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.