Introducing the Codex app
What changed
Introducing the Codex app for macOS—a command center for AI coding and software development with multiple agents, parallel workflows, and long-running tasks.
Why it matters
A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.
How it compares
Related prior coverage to compare against:
- Introducing Codex
- Unlocking the Codex harness: how we built the App Server
- Introducing GPT-5.3-Codex
Sources
- Introducing the Codex app (openai-blog)primary