In the documentation Kagi compares themselves with the competition, including CO2 usage.
I find the CO2 usage part very interesting.
What I would like to see is a comparison between a normal search and using AI (Kagi Assistant) regarding CO2/water usage. Also for the translation service.
NB: I've read some sources, using classic search (....), that the CO2 emission is 68g with AI and 0.2g with search (from this source).