All categoriesconfiguration×session-managementutilitycontext-managementsetupparallel-agentsplanningdiagnostics
| # | Command | Tool | Category | Tool |
|---|---|---|---|---|
| 1 | /fast Toggle the Fast service tier for the current model/thread, or check current state. | Codex CLI | configuration | Codex CLI |
| 2 | /model Choose the active model (and reasoning effort when available). Opens a picker; press s to switch for the current session only. | Codex CLI | configuration | Codex CLI |