A new leak has now highlighted key specifications and features of OnePlus's imminent flagship device, the OnePlus 13T. The 13T is reported to be scheduled to launch shortly, perhaps even as early as April, in China.
https://www.notebookcheck.net/OnePlus-13T-Leaker-highlights-more-details-of-upcoming-compact-flagship-phone.984750.0.html
I don't understand the phone size comparison
If it's not near the iPhone mini's size (like Xperia and folded phones), it's not compact