codex - 💡(How to fix) Fix GPT-5.5 not usable in Codex App for remote projects (works in CLI) [1 comments, 2 participants]

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openai/codex#19370Fetched 2026-04-25 06:10:34
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What version of the Codex App are you using (From “About Codex” dialog)?

26.422.21637

What subscription do you have?

Plus

What platform is your computer?

Microsoft Windows NT 10.0.26100.0 x64

What issue are you seeing?

GPT-5.5 is not usable in Codex App for remote projects.

In remote projects:

  • GPT-5.5 either does not appear in the model picker, or
  • appears but cannot be selected (selection does not apply)

However:

  • GPT-5.5 works correctly in Codex CLI (both local and remote)
  • GPT-5.5 works in Codex App for local projects

What steps can reproduce the bug?

  1. Open Codex App on Windows
  2. Connect to a remote project via SSH
  3. Open the model picker
  4. Attempt to select GPT-5.5

What is the expected behavior?

GPT-5.5 should be selectable and usable in remote projects, consistent with:

  • Codex CLI (local and remote)
  • Codex App (local projects)

Additional information

Environment:

  • Codex App (Windows): 26.422.21637
  • Codex CLI: 0.124.0
  • Remote host: Linux (SSH)

Remote verification: which codex → /usr/local/bin/codex

codex --version → codex-cli 0.124.0

codex -c model='gpt-5.5' → Works correctly

Config (both environments): model = "gpt-5.5"

Notes:

  • Issue only occurs in Codex App when using remote projects
  • CLI confirms GPT-5.5 is fully available in the same remote environment
  • Suggests a mismatch in model availability or selection handling in Codex App remote mode

extent analysis

TL;DR

The issue might be resolved by ensuring consistent model configuration and availability between local and remote project settings in the Codex App.

Guidance

  • Verify that the model configuration is correctly set to "gpt-5.5" in both local and remote project settings within the Codex App.
  • Check for any version discrepancies or compatibility issues between the Codex App (version 26.422.21637) and the Codex CLI (version 0.124.0) that might affect model selection in remote projects.
  • Confirm that the remote host's environment and SSH connection are properly configured to support the selection and use of GPT-5.5 in the Codex App.
  • Consider testing the selection of other models in remote projects to isolate if the issue is specific to GPT-5.5 or a broader problem with model selection in the Codex App.

Example

No specific code example is provided due to the nature of the issue, which seems to be related to configuration and compatibility rather than code syntax.

Notes

The solution may depend on the specific implementation details of the Codex App and its interaction with remote projects, which are not fully detailed in the provided information. Ensuring that both the local and remote environments are correctly configured for the GPT-5.5 model is crucial.

Recommendation

Apply a workaround by checking and ensuring consistent model configurations and environments until a potential fix is available in a future version of the Codex App, as the issue seems to stem from a discrepancy in how models are handled in remote projects compared to local ones and the CLI.

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codex - 💡(How to fix) Fix GPT-5.5 not usable in Codex App for remote projects (works in CLI) [1 comments, 2 participants]