Can you explain what you mean? These days courtesy of an addictive reset game OpenAI is playing, I can't find anything with frontier intelligence that's more cost efficient...
Right now, I find that Grok offers better value, uses fewer tokens per turn, and makes better code. I haven’t tried Cursor because I don’t want to change editors again, but maybe I should try it…
https://artificialanalysis.ai/models/grok-4-6#token-use
So depending on how you want to define "token efficiency", Grok is either tied with OpenAI, or in the lead.
[1] Though I grant that 4.6 appears to be wordier, on the order of Terra max.