Comment by waldrews

That's fine if you're doing interactive dev tasks, but we're in the large volume, cost effective, big inputs, business still with low error tolerance business, and tuned the heck out of what we can get with minimal fix cycles. Millions of cases at hundreds of thousands tokens each - after all the prefiltering by cheaper models - and the tasks still need them to do convoluted reasoning. So 'usually get it right the first time' is a big part of the cost equation.