codex - 💡(How to fix) Fix Fast Mode has disappeared from Codex App [3 comments, 3 participants]

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openai/codex#17772Fetched 2026-04-15 06:28:38
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What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.409.20454 (1462)

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.4.0 arm64 arm

What issue are you seeing?

There seems to be no way to enable fast mode within Codex App. <img width="293" height="234" alt="Image" src="https://github.com/user-attachments/assets/1a2b97ee-449a-46f5-ba16-1ea01a46ea3e" />

<img width="295" height="234" alt="Image" src="https://github.com/user-attachments/assets/0ade7c25-df01-44cd-9b1b-c8ac677e8fee" />

service_tier = "fast" in config.toml seems to only affect Codex CLI.

What steps can reproduce the bug?

Open Codex app. Try to enable fast mode via / command and + menu. Option to enable fast mode is no longer available.

What is the expected behavior?

No response

Additional information

No response

extent analysis

TL;DR

The issue might be resolved by checking the configuration settings in the Codex App itself, as the config.toml file seems to only affect the Codex CLI.

Guidance

  • Check if there are any other configuration options within the Codex App that could enable fast mode, as the config.toml file only affects the CLI.
  • Verify that the / command and + menu are functioning as expected in other aspects, to rule out any broader issues with the app's interface.
  • Consider checking the release notes or documentation for Version 26.409.20454 to see if there were any changes to how fast mode is enabled.
  • If the option to enable fast mode is indeed missing, it might be a bug specific to this version of the Codex App, and reporting this to the developers could be necessary.

Example

No code snippet is provided as there is no clear indication of what code changes could resolve the issue.

Notes

The provided information suggests a potential discrepancy between the Codex App and Codex CLI in terms of configuration. Without more details on the expected behavior or additional configuration options, it's challenging to provide a definitive fix.

Recommendation

Apply workaround: Given the information, the best course of action seems to be checking for alternative configuration options within the Codex App or awaiting further guidance from the developers, as there's no clear indication that upgrading to a different version would resolve the issue.

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