OpenCode Desktop v1.2.25 broke previously working Codex models after upgrade (gpt-5.3-codex-spark unsupported, gpt-5.3-codex hangs) #17309

Description

What happened?

After upgrading to OpenCode Desktop v1.2.25, Codex models that had been working stably for months suddenly stopped working.

Before the upgrade, I could use these models normally in OpenCode Desktop without issues.

After upgrading to v1.2.25:

• gpt-5.3-codex-spark returns:
  • Bad Request: {"detail":"The 'gpt-5.3-codex-spark' model is not supported when using Codex with a ChatGPT account."}
• gpt-5.3-codex no longer responds properly / appears to hang for a long time
• Other free models in OpenCode still work normally

This started immediately after upgrading, so it looks like a regression in model/provider/account handling in the new version.

Version

• OpenCode Desktop: v1.2.25

Environment

• Platform: Desktop app
• Login method: ChatGPT account / Codex account flow
• Models affected:
  • gpt-5.3-codex-spark
  • gpt-5.3-codex

Expected behavior

The same Codex models that were working before the upgrade should continue to work after upgrading.

At minimum:

• gpt-5.3-codex-spark should not suddenly become unsupported if it was previously available/usable
• gpt-5.3-codex should return responses normally instead of hanging

Actual behavior

• gpt-5.3-codex-spark now fails immediately with:

  Bad Request: {"detail":"The 'gpt-5.3-codex-spark' model is not supported when using Codex with a ChatGPT account."}
  
  

Plugins

No response

OpenCode version

v1.2.25

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response