>The fair comparison is where the models are basically equivalent in intelligence

I don't agree with this premise. I think it is fair to say that Haiku is a faster model than Opus.

“Haiku is faster than Opus” is fine as a simple statement. But if you’re going to say “15× faster” in a model card, it should be at similar accuracy. Otherwise you’re mostly comparing different settings, as opposed to a technological leap in model performance. It’s not technically wrong, it’s just not very useful and a bit misleading as a headline.