This article was posted on August 28, 2023. The giraffe was born 31, 2023. So presumably none of the models tested included this particular giraffe in its training data. To directly compare it to GPT-4o, which was released recently, is an invalid comparison. I wouldn't be surprised if GPT-4o does better on novel recognition tasks like this, but you'd need a new novel concept in an image to directly compare GPT-4o and the models tested in this post.