Codex CLIconfigurationbuilt-in
/fast
Toggle the Fast service tier for the current model/thread, or check current state.
Syntax
/fast [on|off|status]Example
/fast onWhen to use
- ▸Speeding up iteration when accuracy can be traded for speed
- ▸Checking whether Fast tier is active with /fast status
- ▸Disabling Fast tier before a critical review pass
More Codex CLI commands
configuration
/approve
Approve one retry of a recent auto review denial — lets Codex attempt a blocked action once under current policy.
session-management
/archive
Archive the current session and exit. Removes it from active session lists; transcript kept locally. Restore with 'codex unarchive <SESSION>'.
context-management
/compact
Summarize the visible conversation to free tokens. Use after long runs so Codex retains key points without blowing the context window.
code-review
/diff
Show the Git diff including files Git isn't tracking yet. Review Codex's edits before committing or running tests.