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## Summary - remove the final whole-blob truncation pass from realtime startup-context assembly - enforce fixed per-section budgets, including each section heading - keep the existing per-section caps and raise the overall realtime startup-context budget to `5300`, matching the sum of those section budgets - add focused tests for the new wrapping and section-budget behavior ## Why The previous flow truncated each section and then middle-truncated the final combined startup-context blob again. Small input changes could shift that combined cut point, which made retained context unstable and caused nondeterministic tests. ## Impact Startup context now preserves section boundaries and ordering deterministically. Each section is still budgeted independently, but the final assembled blob is no longer truncated again as a single opaque string. To match that design, the overall startup-context token budget is updated to the sum of the existing section budgets rather than lowering the section caps. ## Validation - `cargo +1.93.0 test -p codex-core realtime_context` - `cargo +1.93.0 test -p codex-core --test all suite::realtime_conversation::conversation_start_injects_startup_context_from_thread_history -- --exact` - `cargo +1.93.0 test -p codex-core --test all suite::realtime_conversation::conversation_startup_context_current_thread_selects_many_turns_by_budget -- --exact` - `cargo +1.93.0 test -p codex-core --test all suite::realtime_conversation::conversation_startup_context_falls_back_to_workspace_map -- --exact` - `cargo +1.93.0 test -p codex-core --test all suite::realtime_conversation::conversation_startup_context_is_truncated_and_sent_once_per_start -- --exact`
37bf42d5d5
·
2026-04-16 13:51:43 -07:00
5,452 Commits
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.