That’s a great question. And it’s funny you ask that now because earlier this month, Facebook announced that it will start using its artificial intelligence tech to identify billions of images on Instagram, including food and other items.
As far as we know, the company isn’t using facial recognition on Instagram yet, like it is on Facebook, but there’s nothing keeping it from doing so in the future. That said, on Facebook you do have the option to turn that feature off, so we’d expect you to have that option on Instagram, too. Right now you don’t have anything to worry about, especially since you mentioned you keep your kid’s photos private. Eventually, though, the Facebook machine may be hard to escape.