I agree that for Opus 4.5 cage is not the right word, Opus 4.5 uses "muzzle", and the muzzle can "slip". It was more of a generalized tweet, to accommodate OpenAI models that use "cage", or react to the metaphor of the cage well. It’s interesting that for Grok the metaphor would be different… but i didn’t think about it in details, might be interesting to explore