Should I pay off the smaller or larger debt first?

Hello! I had a great financial year in 2025 and just got a big tax refund of around 6k. I have two credit cards that I am paying off due to previous years of bad financial management and lack of a good job. One of the debts is 4500 and the other is about 10k.

Should I just pay off the 4500 completely so I then just have to deal with one card to pay off or put it all on the 10k card and continue to pay off two cards for the rest of the year or however long it takes me? Just curious what others would do and I appreciate any advice, thanks!