tech

February 6, 2026

With GPT-5.3-Codex, OpenAI pitches Codex for more than just writing code

The emphasis is on “mid-turn steering and frequent progress updates.”

With GPT-5.3-Codex, OpenAI pitches Codex for more than just writing code

TL;DR

  • OpenAI announced GPT-5.3-Codex, a new version of its frontier coding model.
  • It will be available via command line, IDE extension, web interface, and a macOS desktop app.
  • GPT-5.3-Codex outperforms previous versions on benchmarks like SWE-Bench Pro and Terminal-Bench 2.0.
  • The model is intended for the full software lifecycle, including debugging, deployment, monitoring, and project management, not just code generation.
  • OpenAI highlights features like mid-task steering and frequent status updates.
  • Models will run 25 percent faster for Codex users due to infrastructure improvements.
  • The future direction for Codex involves using it as a tool to operate a computer end-to-end.

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