fast mode has disappeared
Resolved 💬 9 comments Opened May 10, 2026 by kingtistel Closed May 12, 2026
💡 Likely answer: A maintainer (github-actions[bot], contributor)
responded on this thread — see the highlighted reply below.
What version of Codex CLI is running?
codex-cli 0.130.0
What subscription do you have?
Business
Which model were you using?
gpt-5.5
What platform is your computer?
Darwin 25.4.0 arm64 arm
What terminal emulator and version are you using (if applicable)?
iTerm2
What issue are you seeing?
In codex-cli and Codex App it looks like "Fast mode" has disappeared.
"Fast mode" is no longer indicated in status line in both codex-cli and Codex App,
Both codex-cli and Codex App no longer recognizes /fast command: /fast on or /fast off cannot be invoked.
What steps can reproduce the bug?
Uploaded thread: 019e1240-6cad-7aa0-92a5-0ebb9e1dc192
Start codex-cli or Codex App and in the prompt type /fast (and enter).
What is the expected behavior?
For "Fast mode" to be indicated, listed and be able to enable or disable it.
Additional information
_No response_
9 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
Powered by Codex Action
You can use
/statuslineto configure the status line to display fast mode status if you would like.Hello @etraut-openai you have misread!
"Fast mode" cannot be controlled -- enabled or disabled !
It is not only about is not showing in the status-line!
Ah yes, I misunderstood. Reopening.
Make sure you haven't disabled the
fast_modefeature flag in yourconfig.tomlfile.Also, not all models support the fast ("priority") service tier. Which model do you have selected?
Hi, sorry it seems this is something intentional within my organization.
(I was just replied to that effect in an internal message space)
Regards,
Opher Shachar
From: Eric Traut @.*>
Date: Sunday, 10 May 2026 at 19:37
To: openai/codex @.*>
Cc: Opher Shachar (oshachar) @.>; Author @.>
Subject: Re: [openai/codex] fast mode has disappeared (Issue #22028)
[https://avatars.githubusercontent.com/u/223546144?s=20&v=4]etraut-openai left a comment (openai/codex#22028)<https://github.com/openai/codex/issues/22028#issuecomment-4415790491>
Ah yes, I misunderstood. Reopening.
Make sure you haven't disabled the fast_mode feature flag in your config.toml file.
Also, not all models support the fast ("priority") service tier. Which model do you have selected?
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You are receiving this because you authored the thread.
I am encountering the same on v0.133.0. I get
Unrecognized command '/fast'. Type "/" for a list of supported commands.I tried adding fast_mode = true to ~/.codex/config.toml under [features].
<img width="589" height="337" alt="Image" src="https://github.com/user-attachments/assets/4b966ec2-2382-44ab-8d43-c9ffab2a0fad" />
Why was this issue closed?
/fastno longer works when it used to work on 5.3 Codex.Should reopen it
@maple5233, this issue is closed. If you're experiencing a problem related to fast mode, please open a new issue and provide all the details requested in the bug report template.