It easily eclipsed the previous mark of 25,114 set in 2012 in the first Test against South Africa. By the opening tea break, the Gabba boasted 20,804 - and 24,851 by the dinner interval.
They are impressive numbers but CA will demand more to keep Brisbane as its summer starter.
The Gabba is traditionally where Australia begins its test summer.
Stats show why - they have not lost a Gabba Test since 1988.
But poor crowds ensured Gabba lost that honour this year with November's first Test against South Africa relocated to Perth.
The move backfired spectacularly - Australia were crushed by the Proteas on their way to a 2-1 series loss.
Brisbane are back as the host of the summer's first Test next year - for the 2017-18 Ashes, no less.
However, it came with a caveat from CA chief James Sutherland, who said the Brisbane fortress was no certainty to host first Tests beyond 2017.
So far, so good for the Gabba after Thursday.
Numbers are already on track to exceed the 80,000 total crowd figure over five days predicted by Sutherland.
- AAP