You'll notice
Short, unrecognized model names now get a further chance instead of being rejected immediately
What
When Claude Code encounters a model name it doesn't recognize, it used to reject it right away if it didn't match a known shape. Now, if the unrecognized name is classified as an "other" shape and is short enough, it's allowed to fall through to further allowed/blocked checks instead of being rejected on the spot.
Why
This avoids immediately blocking short model names that don't match a known pattern, giving them a chance to pass other validation instead of being turned away outright.