Problem GPT-5.3-Codex-Spark

[Mathis2315]

Description

I'm having a problem with OpenCode GUI 1.1.65 connected to Codex via OAuth web browser. When I try to select the new OpenAI Spark model, I get this error:
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

1.1.65

Steps to reproduce

No response

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

No response

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Github Copilot GPT 5.3 Codex - Requested Model is not supported - (model works in VS Code). #13313: Github Copilot GPT 5.3 Codex - Requested Model is not supported (similar model error on Windows)
• Codex 5.3 not working with copilot #13312: Codex 5.3 not working with copilot (same gpt-5.3-codex model issue)
• gpt-5.3-codex fails with 404 when authenticated via OpenAI API key #12839: gpt-5.3-codex fails with 404 when authenticated via OpenAI API key (related Codex support issue)

These issues are all related to the gpt-5.3-codex/Codex 5.3 model and may have overlapping solutions.

[neriousy]

I believe you need the Pro subscription rather than the Plus

[Mathis2315]

I believe you need the Pro subscription rather than the Plus

GPT-5.3-codex-spark need a Pro account ?

[neriousy]

[Mathis2315]

Oh thx my bad bro

[rajkosto]

But if that's the case, why do Plus users have Spark-only limit bars visible on the usage page ?

[krazylearner]

But if that's the case, why do Plus users have Spark-only limit bars visible on the usage page ?

yes same issue with me

[FaFre]

I think the issue should reopened, the spark model seemingly has been added to plus as well during the last day or so. Model update required?

[leomiranda]

same here, please reopen this issue

[Kreijstal]

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