17d552fb4d
## Why Compaction now installs replacement history inside the session, but the turn and compaction callers were still reaching into `ModelClientSession` to reset websocket transport state after that install. That made a transport-level reset part of the compaction API even though websocket incremental request selection already checks whether the next request is a strict extension of the previous one and falls back to a full `response.create` when it is not. ## What changed - Removed the compaction-side calls to `reset_websocket_session` from `compact.rs` and `session/turn.rs`. - Simplified pre-sampling and mid-turn compaction helpers so they return `CodexResult<()>` instead of carrying a reset flag. - Made `ModelClientSession::reset_websocket_session` private to `client.rs`, leaving only the websocket timeout recovery path inside the client as a caller. ## Validation - `cargo test -p codex-core --test all responses_websocket_creates_on_non_prefix` - `cargo test -p codex-core --test all steered_user_input_waits_for_model_continuation_after_mid_turn_compact` - `cargo test -p codex-core --test all pre_sampling_compact_runs_on_switch_to_smaller_context_model`
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.