Hey folks, article author here. First of all: I didn't submit it to HN.
As few people pointed out, this article was written in 2023 and it's intentionally focused just on pricing – I planned a follow up about accuracy and other aspects, but Superface pivoted away from multi-provider API abstractions and I was laid off.
So for me this is more of a time capsule of what Superface used to be about. I'm glad if you found the article still useful and the discussion here is really informative, but I won't be updating the article any further. Thanks for understanding!