Day-one estimate
Calculated from an estimated parameter count — the maker hasn't published one. Every model on this site is calculated the
same way, so the comparison holds even where the absolute value carries uncertainty.
Our figures are good to roughly a factor of two to three, which is why we only ever
state a difference of 5× or more.
We cannot pin this one down. Meta AI has never published how Llama 3.1-405B is built, and the two plausible answers are far apart — which is why a range is shown rather than a figure. It is listed because leaving it out would reward the silence, and it is barred from every headline claim on this site.
Alibaba · capability 84.8. It is more capable than Llama 3.1-405B and uses about 37× less energy per answer: 0.351 Wh against 13.0 Wh.
What Meta AI publishes
Energy cannot be worked out without knowing how big a model is. Of the 12 models
from Meta AI that we track, 10 can be assessed at all — the rest publish
too little for anyone outside the company to calculate anything.