I too have seen anecdotes that people "feel" more productive. But science says that they're 19% less productive. I'm going to go with science on this one.
The study that said devs were 19% less productive was flawed in a number of ways: small sample size, poorly chosen tasks, no prior training on AI tools.
The science is by no means conclusive. A joint Harvard / MIT study found developers completed tasks up to 50% faster [0]!
