Model Selection Dialog Does Not Display Spark Model
Resolved 💬 5 comments Opened Feb 28, 2026 by Heinrich-XIAO Closed Feb 28, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of the Codex App are you using (From “About Codex” dialog)?
Version 26.227.1448 (747)
What subscription do you have?
Plus
What platform is your computer?
Darwin 25.3.0 arm64 arm
What issue are you seeing?
<img width="220" height="213" alt="Image" src="https://github.com/user-attachments/assets/7c304a72-7b7d-4cd0-9d1f-c6e9be836479" />
The Spark model is not appearing.
What steps can reproduce the bug?
Download and then open the app.
What is the expected behavior?
It should show the Spark model in the selection.
Additional information
_No response_
5 Comments
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<img width="929" height="938" alt="Image" src="https://github.com/user-attachments/assets/45b076cb-123c-466a-a344-619f482f76a2" />
it also says that i should probably have 5.3 spark access since it has a usage limit at 100%.
Can confirm the problem, I've tried launch codex with "codex -m gpt-5.3-codex-spark" it launches but doesnt work says model is nor supported when using Codex with a ChatGPT account. probably because the model metadata is not implemented yet.
This issue is for the desktop app, but yeah.
The spark model is currently available only for pro subscribers.