Is OKC bigger than Chicago?

I'm curious to know, in terms of population, size, or economic impact, which city is greater: Oklahoma City, also known as OKC, or the iconic metropolis of Chicago? Is OKC a rising star that has surpassed the Windy City in any measurable way, or does Chicago still hold the crown as a leading American city? I'm eager to hear the comparison and see if the scales tip in favor of one city over the other.