## Why After turning Fast mode off in the TUI, returning from a side thread could make `Fast` appear again in the main chat widget. The opt-out itself was still persisted; the display was being rebuilt from stale cached `ThreadSessionState` data, which made it look like Fast had been re-enabled. Fixes #23104. ## What changed - Keep the active thread's cached `service_tier` in sync whenever the user persists a service-tier selection. - Update both the primary-thread snapshot and the thread event store so restored TUI state reflects the current tier. - Add a focused regression test for clearing a cached Fast tier. ## Manual repro 1. Start a TUI session where `Fast` is enabled by default. 2. Run `/fast` and turn Fast mode off. Confirm `Fast` disappears from the chat widget display. 3. Re-enter thread navigation via either path: - Run `/side test`, then return to the main thread. - Run `/agent`, enter a child thread, then return to the main thread. 4. Before this fix, `Fast` reappears in the main chat widget display even though the opt-out was already persisted. 5. After this fix, `Fast` stays cleared. ## Verification - `cargo test -p codex-tui app::thread_session_state::tests::service_tier_sync_updates_active_cached_session -- --exact`
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.
