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This model is not supported when using X-OpenAI-Internal-Codex-Responses-Lite. #30422

Description

@ghz0319

What version of the Codex App are you using (From “About Codex” dialog)?

version 26.623.42026

What subscription do you have?

plus

What platform is your computer?

macOS

What issue are you seeing?

Open Codex Desktop App.
Select the latest model from the model picker (or use default configuration).
Type a prompt and send.
See the error: "That error means the model you selected can’t be used with the Lite Codex Responses transport. Use a model supported by Codex for your provider/config, or remove X-OpenAI-Internal-Codex-Responses-Lite if you need the full Responses path."

What steps can reproduce the bug?

Feedback ID: 019f0bff-f290-73d0-95a6-92232f4a4f95

What is the expected behavior?

Open Codex Desktop App.
Select the latest model from the model picker (or use default configuration).
Type a prompt and send.
See the error: "That error means the model you selected can’t be used with the Lite Codex Responses transport. Use a model supported by Codex for your provider/config, or remove X-OpenAI-Internal-Codex-Responses-Lite if you need the full Responses path."

Additional information

Open Codex Desktop App.
Select the latest model from the model picker (or use default configuration).
Type a prompt and send.
See the error: "That error means the model you selected can’t be used with the Lite Codex Responses transport. Use a model supported by Codex for your provider/config, or remove X-OpenAI-Internal-Codex-Responses-Lite if you need the full Responses path."

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    appIssues related to the Codex desktop appapp-serverIssues involving app server protocol or interfacesbugSomething isn't working

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