codex - 💡(How to fix) Fix Clicking GPT-5.5 in non-project Codex Desktop chats has no effect [2 comments, 3 participants]

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openai/codex#19213Fetched 2026-04-24 05:58:39
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What issue are you seeing?

In the Codex Desktop app, a chat that is not attached to any project cannot be switched from GPT-5.4 to GPT-5.5.

When I open the model selector and click GPT-5.5, nothing changes: the selection/checkmark remains on GPT-5.4. GPT-5.5 is visible in the menu, but clicking it has no effect in a non-project chat.

However, when I start or open a chat inside a project, GPT-5.5 can be selected normally.

Steps to reproduce

  1. Open the Codex Desktop app.
  2. Start a new chat without selecting Work in a project / without attaching a project.
  3. Open the model selector.
  4. Click GPT-5.5.
  5. Observe that nothing changes and the selected model remains GPT-5.4.
  6. Start or open a chat inside a project.
  7. Open the model selector and click GPT-5.5.
  8. Observe that GPT-5.5 can be selected normally in the project-based chat.

Expected behavior

GPT-5.5 should be selectable in both:

  • chats with a selected project
  • chats without a selected project

Actual behavior

In non-project chats, clicking GPT-5.5 has no effect and the chat remains selected on GPT-5.4. In project-based chats, GPT-5.5 can be selected normally.

Environment / account

  • App: Codex Desktop app
  • Codex version: 26.422.20832 (2025)
  • Subscription: Pro
  • Platform: macOS

Additional information

The attached screenshot shows the model selector where GPT-5.4 remains checked while GPT-5.5 is visible as an option in a chat where no project is selected.

<img width="2140" height="982" alt="Image" src="https://github.com/user-attachments/assets/69736f98-2fbb-4254-bfa6-9b0a256e2d29" />

extent analysis

TL;DR

The issue can be resolved by investigating and fixing the conditional logic that handles model selection in the Codex Desktop app, specifically for chats not attached to any project.

Guidance

  • Review the code responsible for handling model selection in the Codex Desktop app to identify the conditional logic that differentiates between project-based and non-project chats.
  • Verify that the model selection API or function is being called correctly for non-project chats and that the response is being handled as expected.
  • Check for any project-specific flags or settings that might be interfering with model selection in non-project chats.
  • Test the model selection functionality in different scenarios, including chats with and without projects, to ensure consistency in behavior.

Example

No code snippet can be provided without more context, but the investigation should focus on the model selection handler and any conditional statements related to project attachment.

Notes

The issue seems to be specific to the Codex Desktop app and its handling of model selection in non-project chats. Without access to the app's codebase, it's challenging to provide a more detailed solution.

Recommendation

Apply a workaround by checking the app's settings or preferences for any options related to model selection or project attachment that might resolve the issue, as upgrading to a fixed version is not mentioned as an option in the provided context.

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FAQ

Expected behavior

GPT-5.5 should be selectable in both:

  • chats with a selected project
  • chats without a selected project

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codex - 💡(How to fix) Fix Clicking GPT-5.5 in non-project Codex Desktop chats has no effect [2 comments, 3 participants]