Introducing upgrades to Codex
What changed
Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or even your phone.
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
- Introducing GPT-5.3-Codex
- Introducing GPT-5.3-Codex-Spark
Sources
- Introducing upgrades to Codex (openai-blog)primary