Here’s preliminary UC freshman admissions data for each campus as of 6/27/23, but only for in-state applicants. Numbers are still moving, as I believe Berkeley pulled more students off the waitlist in early July.
Quick glance at the admitted student count suggests it was slightly easier to get into UCLA and UC Berkeley this year vs. last year, and that UC Irvine is one heck of a tough admit these days, even for CA students.