As humans don't actually work like LLMs do, we can surmise that there are far more efficient ways to get to AGI. We just need to find them.
That’s the known minimum cost. We have a lot of room to get costs down if we can figure out how.
I'm reminded of how insanely complex the human brain is: ~100 trillion connections. The Nvidia H100 has just 0.08 trillion transistors.