Originally published at recca0120.github.io The day Opus 4.7 launched, Claude Code's opus alias silently pointed to the new version. No notification, no changelog reminder. Open the /model picker — Opus 4.6 was gone. I'd previously written a }}">3-month billing analysis showing 4.7's quota burn is 2.4× that of 4.6. Switching back seemed obvious, but the picker had no option for it. I spent an afternoon testing every configuration method and combing through GitHub issues. Three Configuration Mechanisms Claude Code currently offers three ways to modify the /model picker. 1. availableModels : Replaces, Doesn't Extend Add this to ~/.claude/settings.json : { "availableModels" : [ "claude-opus-4-6" , "claude-sonnet-4-6" , "claude-haiku-4-5" ] } Enter fullscreen mode Exit fullscreen mode The /model picker now shows only these three . The default opus / sonnet / haiku aliases all disappear, replaced entirely by your list.…