About [0], Phi-2 is sort of a proof of concept of having very narrow and high quality dataset normal transformer models can perform at 8x to 10x better results. Of course, if you add messy prompts they will fail! What a dumb view.

And the Yi-* models are suspect of being trained on the test set or at least be contaminated. All the other models barely move and if they do, it's probably an artifact of being multiple choice. There were papers showing most models improve if they can reason the answer by letting it have more tokens in the answer.

The chat elo-like rankings are much more interesting:

https://huggingface.co/spaces/lmsys/chatbot-arena-leaderboar...

For completeness, here's the paper linked in the tweet https://arxiv.org/pdf/2402.01781.pdf