What is more challenging and or draining- parenting a baby or a toddler?

Everyone says having a baby will be hard, (I’m 26 weeks pregnant) but it gets easier as they grow. Is this true? I used to babysit kids, and I found that the babies were really easy, it’s when they start walking and talking and running that they get to be a bit of a handful! (lol).

Just curious, I would like to get some moms and dads to weigh in!
Thanks