One thing worth factoring into the Heavy vs Ultra choice: Heavy no longer includes free Cursor Ultra for new links. Official docs now treat linking as a usage grant (Grok Bot), not a Cursor Ultra plan.
On Aug 15, staff (deanrie) in Free Cursor Ultra with Grok (posts #6 and #9) said the banner was correct — Ultra stays while Heavy stays active. Mid/late Aug that promo copy disappeared from the help docs with no dated public cutoff I’ve found. Colin later said the promo ended and existing claimants keep Ultra; new links get Grok Bot only.
Billing has also said they don’t have a published cutoff date and the help page was behind. Public timeline thread: Did I miss an announcement on SuperGrok Heavy and Cursor Ultra?
So if you only want Grok Bot, Ultra may be the cleaner buy. If you’re looking at Heavy expecting Ultra at $0, that’s the older offer — did anyone here see an official dated end announcement before the docs changed?