How do I turn off numbered keyboard on iPhone 15 Plus?

Voice control is turned on.

Use Voice Control to interact with iPhone - Apple Support

Beanie401 wrote:

day before yesterday I got my phone out and ready for a busy day. I was in a hurry and not paying close attention. I remember that it asked me something _ can’t remember what. Immediately after that everything that has an action suddenly had a number next too or on top of it. The next example is the keyboard. Every letter, punctuation, everything, has a number assigned to it. I can’t figure out how to turn it off!!! Help! Please.

You have very likely enabled Voice Control --> Use Voice Control on your iPhone, iPad, or iPod touch - Apple Support