This is one of those areas where even state-of-the-art models still struggle. You’re asking for a high level of detail at a per-person level, which means you end up with lots and lots of very small objects that all need to be rendered with convincing detail.
I should probably explain the scoring rubric better - it's in the (i) info icon. If you click the pass/fail button towards the top, it switches from a simple pass/fail view to a weighted score. That weighted score is based on three things: level of adherence to the prompt, visual fidelity, and the number of attempts.
I've tried to keep my criteria as objective as possible, but there's just a certain level of unavoidable subjectivity to it.
For example, with the octopus image: Even though the minimum criteria might be five tentacles covered, having all eight is much closer to the ideal of “an octopus,” so it usually gets bumped up to a higher rating (bronze, silver, gold).
Honestly, I think I agree that the gpt-image-2 probably should be upgraded to a gold medal. Thanks for pointing that out!
1 - Gpt-image-2 seems to pass the Flat Earth test? (if not, I'm sure the paid thinking 2k version passes it).
2 - Since NB2 was earlier, many gold medals are assigned to it, even though now GI2 passes them too, example the Octopus test NB2 14 attempts but GI2 just 2 (BTW number of attempts should affect the score I guess?)