I was making the point that this is new tech, not available to us at all a few mere years ago, so assuming a constant cost when making predictions is difficult. Assume inference prices will go down, not up.
Ah, in that case we're on the same page. I'm expecting at least a factor of 1000 to be possible given the apparent higher efficiency of the human brain vs current computers, which is of course terrifying given how good and cheap the various creative AI already are, while also seeming like a prerequisite for robotic/car AI to be all three of "good enough", "fast enough", and "within the limited power budget".