Codex App Update: GPT-5.3-Codex-Spark & Conversation Forking
Codex app gains GPT-5.3-Codex-Spark, conversation forking, and floating windows. Windows alpha testing now open.
TL;DR
- GPT-5.3-Codex-Spark now available in Codex app
- Conversation forking lets you branch discussions without losing context
- Floating pop-out window keeps conversations accessible while you work
- Windows alpha testing is live — sign up if you want early access
New
- GPT-5.3-Codex-Spark support — Latest model available for use in the app
- Conversation forking — Branch a conversation to explore different directions without losing the original thread
- Floating pop-out window — Detach conversations into a separate window so you can reference them while coding
Fixed
- Performance improvements and general bug fixes across the app
What's Next
Windows alpha testing is now open. Sign up here if you want to test the app before general release.
Update via the Codex app or download the latest version from developers.openai.com/codex.
Source: Codex
