Overview
- The macOS app centralizes long-running, multi-agent workflows with project threads, parallel execution, diff review, and editor integration, including Git worktrees to isolate changes.
- Codex adds extensibility through Skills for tool-connected workflows and Automations for scheduled background tasks, with integrations spanning design, issue tracking, deployment, and GitHub pull requests.
- Access temporarily extends to ChatGPT Free and Go users, and rate limits are doubled for Plus, Pro, Business, Enterprise, and Edu plans across the app, CLI, IDE extensions, and cloud.
- OpenAI recommends GPT-5.2-Codex for coding projects, reports more than one million developers used Codex in the past month, and says usage doubled after the GPT-5.2-Codex update.
- The launch answers competitive pressure from Anthropic, Google, and Cursor, and OpenAI says a Windows version is planned after the macOS debut.