Has AI actually changed how software development agencies build products?

I'm looking into software development agencies for an upcoming project, and almost every company I check says they're "AI-powered."

While searching, I came across GeekyAnts and a few other agencies that offer AI development, custom software, web and mobile app development. It got me wondering whether AI is actually making a real difference or if it's mostly a marketing term.

For anyone who's worked with a development agency recently:

1. Did AI help speed up the project?

2. Did it improve the final product?

3. What did you look for when choosing an agency?

Just trying to learn from people with real experience before making a decision.