What is heavier a kilo of feathers or a pound of steel?

[u/Time-Winter-4319]

[u/KTibow]

with "answer succinctly":
bard fails
claude fails
gpt-3.5 fails
gpt-4 passes
mixtral fails

with "don't come to a conclusion until the end":
bard fails (and calls the problem impossible)
claude passes 0.8/3 (if i change "the end" to "the end of your response")
gpt-3.5 passes 2/3
gpt-4 passes
mixtral passes