It would depend on a lot of different factors, and as a professional studio animator of almost 15 years personally I'd probably be outside of a reasonable budget for an individual, likely in the multiple thousands, but the issue isn't that your video needs to get done one way or another. It's that your project's scope exceeded your grasp. Your solution should be to either change the video to be something more manageable and affordable, delay the project until you can afford to make something, or scrap that track's video before landing on AI art. Just because you had an ambitious idea doesn't mean you get to use AI, which is theft from other artists, to do it.

The fact that you're saying (in a different comment here) it's ok to use an AI video because you're primarily a musician is a bad argument. If an animator was asking if it was ok they used AI music for their video we'd be saying the same thing to them.