Personally, I'd go with the 14 for the battery life, but I think it really depends on if you want to prioritize. With the smaller phones, you have a very stark tradeoff between size vs camera and battery.

If you're No. 1 priority is a small size and you have no opinion on anything else, PerfectRec has the 13 Mini at a 41% confidence match for you. But that would change dramatically if you care about camera or battery. If you say battery is more important than size, it has the 14 Pro at a 53% match for you. That number would creep up depending on your camera and budget priorities.